Author Archives: Robins

[Solved] Front end error: Unknown custom element

report errors

chunk-vendors.js:2128 [Vue warn]: Unknown custom element: - did you register the component correctly? For recursive components, make sure to provide the “name” option. - did you register the component correctly?For recursive components, make sure to provide the "name" option

 

reason

el component not registered

Solution:

1. Download elementUI

npm i element-ui -S

2. Import

Add the following three lines  in main.js:

import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
Vue.use(ElementUI);

Done!

[Solved] Opencv Calls PB Model Error: cv2.error: OpenCV(4.2.0)…

 

Problem description

cv2.error: OpenCV(4.2.0) C:\projects\opencv-python\opencv\modules\dnn\src\dnn.cpp:562: error: (-2:Unspecified error) Can't create layer "feature_fusion/truediv" of type "RealDiv" in function 'cv::dnn::dnn4_v20191202::LayerData::getLayerInstance'

Solution:

It has three places to modified in model.py

1.  Comment out this line:  #images = mean_image_subtraction(images)
2. c1_1 = slim.conv2d(tf.concat([g[i-1], f[i]], axis=3), num_outputs[i], 1)
3. pi2 = 0.5 * np.pi
   angle_map = (slim.conv2d(g[3], 1, 1, activation_fn=tf.nn.sigmoid, normalizer_fn=None) - 0.5) * pi2
   F_geometry = tf.concat([geo_map, angle_map], axis=3)


ES Error: Elasticsearch health check failed [How to Solve]

Original error report:

2020-11-30 18:39:08.019  WARN 17664 --- [-192.168.113.22] s.b.a.e.ElasticsearchRestHealthIndicator : Elasticsearch health check failed

java.net.ConnectException: Timeout connecting to [localhost/127.0.0.1:9200]
	at org.elasticsearch.client.RestClient$SyncResponseListener.get(RestClient.java:943) ~[elasticsearch-rest-client-6.4.3.jar:6.4.3]
	at org.elasticsearch.client.RestClient.performRequest(RestClient.java:227) ~[elasticsearch-rest-client-6.4.3.jar:6.4.3]
	at org.springframework.boot.actuate.elasticsearch.ElasticsearchRestHealthIndicator.doHealthCheck(ElasticsearchRestHealthIndicator.java:60) ~[spring-boot-actuator-2.1.7.RELEASE.jar:2.1.7.RELEASE]
	at org.springframework.boot.actuate.health.AbstractHealthIndicator.health(AbstractHealthIndicator.java:82) ~[spring-boot-actuator-2.1.7.RELEASE.jar:2.1.7.RELEASE]
	at org.springframework.boot.actuate.health.CompositeHealthIndicator.health(CompositeHealthIndicator.java:95) [spring-boot-actuator-2.1.7.RELEASE.jar:2.1.7.RELEASE]
	at org.springframework.boot.actuate.health.HealthEndpoint.health(HealthEndpoint.java:50) [spring-boot-actuator-2.1.7.RELEASE.jar:2.1.7.RELEASE]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_161]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_161]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_161]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_161]
	at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:282) [spring-core-5.1.9.RELEASE.jar:5.1.9.RELEASE]
	at org.springframework.boot.actuate.endpoint.invoke.reflect.ReflectiveOperationInvoker.invoke(ReflectiveOperationInvoker.java:76) [spring-boot-actuator-2.1.7.RELEASE.jar:2.1.7.RELEASE]
	at org.springframework.boot.actuate.endpoint.annotation.AbstractDiscoveredOperation.invoke(AbstractDiscoveredOperation.java:60) [spring-boot-actuator-2.1.7.RELEASE.jar:2.1.7.RELEASE]
	at org.springframework.boot.actuate.endpoint.jmx.EndpointMBean.invoke(EndpointMBean.java:121) [spring-boot-actuator-2.1.7.RELEASE.jar:2.1.7.RELEASE]
	at org.springframework.boot.actuate.endpoint.jmx.EndpointMBean.invoke(EndpointMBean.java:96) [spring-boot-actuator-2.1.7.RELEASE.jar:2.1.7.RELEASE]
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) [na:1.8.0_161]
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) [na:1.8.0_161]
	at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468) [na:1.8.0_161]
	at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76) [na:1.8.0_161]
	at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309) [na:1.8.0_161]
	at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1401) [na:1.8.0_161]
	at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829) [na:1.8.0_161]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_161]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_161]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_161]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_161]
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:361) [na:1.8.0_161]
	at sun.rmi.transport.Transport$1.run(Transport.java:200) [na:1.8.0_161]
	at sun.rmi.transport.Transport$1.run(Transport.java:197) [na:1.8.0_161]
	at java.security.AccessController.doPrivileged(Native Method) [na:1.8.0_161]
	at sun.rmi.transport.Transport.serviceCall(Transport.java:196) [na:1.8.0_161]
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568) [na:1.8.0_161]
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826) [na:1.8.0_161]
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:683) [na:1.8.0_161]
	at java.security.AccessController.doPrivileged(Native Method) [na:1.8.0_161]
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682) [na:1.8.0_161]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_161]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_161]
	at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_161]
Caused by: java.net.ConnectException: Timeout connecting to [localhost/127.0.0.1:9200]
	at org.apache.http.nio.pool.RouteSpecificPool.timeout(RouteSpecificPool.java:169) ~[httpcore-nio-4.4.11.jar:4.4.11]
	at org.apache.http.nio.pool.AbstractNIOConnPool.requestTimeout(AbstractNIOConnPool.java:628) ~[httpcore-nio-4.4.11.jar:4.4.11]
	at org.apache.http.nio.pool.AbstractNIOConnPool$InternalSessionRequestCallback.timeout(AbstractNIOConnPool.java:894) ~[httpcore-nio-4.4.11.jar:4.4.11]
	at org.apache.http.impl.nio.reactor.SessionRequestImpl.timeout(SessionRequestImpl.java:183) ~[httpcore-nio-4.4.11.jar:4.4.11]
	at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processTimeouts(DefaultConnectingIOReactor.java:210) ~[httpcore-nio-4.4.11.jar:4.4.11]
	at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvents(DefaultConnectingIOReactor.java:155) ~[httpcore-nio-4.4.11.jar:4.4.11]
	at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:351) ~[httpcore-nio-4.4.11.jar:4.4.11]
	at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.execute(PoolingNHttpClientConnectionManager.java:221) ~[httpasyncclient-4.1.4.jar:4.1.4]
	at org.apache.http.impl.nio.client.CloseableHttpAsyncClientBase$1.run(CloseableHttpAsyncClientBase.java:64) ~[httpasyncclient-4.1.4.jar:4.1.4]
	... 1 common frames omitted

Solution: add the following configuration to solve the problem successfully

  data:
    elasticsearch:
      repositories:
        enabled: true
      cluster-nodes: 192.168.136.137:9300
      cluster-name: docker-cluster
  #      Add the following configuration to pass the health check
  elasticsearch:
    rest:
      uris: ["http://192.168.136.137:9200"]

COLMAP Install Error: Undefined reference to libtiff4.0 [Solved]

At Ubuntu 20 When installing colmap under 04 system, run under /colmap/build folder

make -j

The following errors are reported:

/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFReadEncodedStrip@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFReadEXIFDirectory@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFFieldReadCount@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFSetTagExtender@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFCurrentDirectory@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFReadTile@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFSetDirectory@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFClientOpen@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFSetField@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFScanlineSize@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFWriteDirectory@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFTileRowSize@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFWriteScanline@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFGetFieldDefaulted@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFReadDirectory@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFIsTiled@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFFieldDataType@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFSwabArrayOfLong@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFMergeFieldInfo@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFLastDirectory@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `_TIFFDataSize@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFSetSubDirectory@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFFieldPassCount@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFFieldWithTag@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFReadRGBAImage@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFClose@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFGetTagListCount@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFDefaultStripSize@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFFieldTag@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFGetTagListEntry@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFComputeStrip@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFDataWidth@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFFieldName@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFIsByteSwapped@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFGetField@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFTileSize@LIBTIFF_4.0'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libfreeimage.so: undefined reference to `TIFFStripSize@LIBTIFF_4.0'
collect2: error: ld returned 1 exit status
src/mvs/CMakeFiles/normal_map_test.dir/build.make:163: recipe for target 'src/mvs/normal_map_test' failed
make[2]: *** [src/mvs/normal_map_test] Error 1

Conduct in-depth investigation and find that there is a Warning in the previous cmake…:

runtime library [libgmp.so.10] in /usr/lib/x86_64-linux-gnu may be hidden by files in: /home/damon/anaconda2/lib

It turns out that anaconda’s Qt is used, so add the following fields to Cmakelist.txt in the colmap folder to force the switch to system Qt

SET(CMAKE_PREFIX_PATH "/usr/lib/x86_64-linux-gnu/cmake")

Re-execute make – j and it will be OK!

Note: If you have previously made and failed, you need to delete all the files in the build folder and then make -j again, otherwise it will still fail

[Easy Solution] flutter Run Error: library “libflutter.so“ not found

Error log

E/FlutterLoader(20717): java.util.concurrent.ExecutionException: java.lang.UnsatisfiedLinkError: dlopen failed: library "libflutter.so" not found
E/FlutterLoader(20717): 	at java.util.concurrent.FutureTask.report(FutureTask.java:123)
E/FlutterLoader(20717): 	at java.util.concurrent.FutureTask.get(FutureTask.java:193)
E/FlutterLoader(20717): 	at io.flutter.embedding.engine.loader.FlutterLoader.ensureInitializationComplete(FlutterLoader.java:223)
E/FlutterLoader(20717): 	at io.flutter.embedding.engine.FlutterEngine.<init>(FlutterEngine.java:327)
E/FlutterLoader(20717): 	at io.flutter.embedding.engine.FlutterEngine.<init>(FlutterEngine.java:207)
E/FlutterLoader(20717): 	at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.setupFlutterEngine(FlutterActivityAndFragmentDelegate.java:265)
E/FlutterLoader(20717): 	at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onAttach(FlutterActivityAndFragmentDelegate.java:174)
E/FlutterLoader(20717): 	at io.flutter.embedding.android.FlutterFragment.onAttach(FlutterFragment.java:743)
E/FlutterLoader(20717): 	at androidx.fragment.app.Fragment.performAttach(Fragment.java:2922)
E/FlutterLoader(20717): 	at androidx.fragment.app.FragmentStateManager.attach(FragmentStateManager.java:464)
E/FlutterLoader(20717): 	at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:275)
E/FlutterLoader(20717): 	at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
E/FlutterLoader(20717): 	at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100)
E/FlutterLoader(20717): 	at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
E/FlutterLoader(20717): 	at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:3138)
E/FlutterLoader(20717): 	at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:3072)
E/FlutterLoader(20717): 	at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:251)
E/FlutterLoader(20717): 	at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:502)
E/FlutterLoader(20717): 	at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1435)
E/FlutterLoader(20717): 	at android.app.Activity.performStart(Activity.java:8024)
E/FlutterLoader(20717): 	at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3475)
E/FlutterLoader(20717): 	at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
E/FlutterLoader(20717): 	at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
E/FlutterLoader(20717): 	at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
E/FlutterLoader(20717): 	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
E/FlutterLoader(20717): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
E/FlutterLoader(20717): 	at android.os.Handler.dispatchMessage(Handler.java:106)
E/FlutterLoader(20717): 	at android.os.Looper.loop(Looper.java:223)
E/FlutterLoader(20717): 	at android.app.ActivityThread.main(ActivityThread.java:7656)
E/FlutterLoader(20717): 	at java.lang.reflect.Method.invoke(Native Method)
E/FlutterLoader(20717): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
E/FlutterLoader(20717): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
E/FlutterLoader(20717): Caused by: java.lang.UnsatisfiedLinkError: dlopen failed: library "libflutter.so" not found
E/FlutterLoader(20717): 	at java.lang.Runtime.loadLibrary0(Runtime.java:1087)
E/FlutterLoader(20717): 	at java.lang.Runtime.loadLibrary0(Runtime.java:1008)
E/FlutterLoader(20717): 	at java.lang.System.loadLibrary(System.java:1664)
E/FlutterLoader(20717): 	at io.flutter.embedding.engine.FlutterJNI.loadLibrary(FlutterJNI.java:141)
E/FlutterLoader(20717): 	at io.flutter.embedding.engine.loader.FlutterLoader$1.call(FlutterLoader.java:174)
E/FlutterLoader(20717): 	at io.flutter.embedding.engine.loader.FlutterLoader$1.call(FlutterLoader.java:166)
E/FlutterLoader(20717): 	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
E/FlutterLoader(20717): 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
E/FlutterLoader(20717): 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
E/FlutterLoader(20717): 	at java.lang.Thread.run(Thread.java:923)
E/AndroidRuntime(20717): FATAL EXCEPTION: main
E/AndroidRuntime(20717): Process: surf.jetstream.android, PID: 20717
E/AndroidRuntime(20717): java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.UnsatisfiedLinkError: dlopen failed: library "libflutter.so" not found
E/AndroidRuntime(20717): 	at io.flutter.embedding.engine.loader.FlutterLoader.ensureInitializationComplete(FlutterLoader.java:315)
E/AndroidRuntime(20717): 	at io.flutter.embedding.engine.FlutterEngine.<init>(FlutterEngine.java:327)
E/AndroidRuntime(20717): 	at io.flutter.embedding.engine.FlutterEngine.<init>(FlutterEngine.java:207)
E/AndroidRuntime(20717): 	at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.setupFlutterEngine(FlutterActivityAndFragmentDelegate.java:265)
E/AndroidRuntime(20717): 	at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onAttach(FlutterActivityAndFragmentDelegate.java:174)
E/AndroidRuntime(20717): 	at io.flutter.embedding.android.FlutterFragment.onAttach(FlutterFragment.java:743)
E/AndroidRuntime(20717): 	at androidx.fragment.app.Fragment.performAttach(Fragment.java:2922)
E/AndroidRuntime(20717): 	at androidx.fragment.app.FragmentStateManager.attach(FragmentStateManager.java:464)
E/AndroidRuntime(20717): 	at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:275)
E/AndroidRuntime(20717): 	at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
E/AndroidRuntime(20717): 	at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100)
E/AndroidRuntime(20717): 	at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
E/AndroidRuntime(20717): 	at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:3138)
E/AndroidRuntime(20717): 	at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:3072)
E/AndroidRuntime(20717): 	at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:251)
E/AndroidRuntime(20717): 	at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:502)
E/AndroidRuntime(20717): 	at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1435)
E/AndroidRuntime(20717): 	at android.app.Activity.performStart(Activity.java:8024)
E/AndroidRuntime(20717): 	at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3475)
E/AndroidRuntime(20717): 	at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
E/AndroidRuntime(20717): 	at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
E/AndroidRuntime(20717): 	at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
E/AndroidRuntime(20717): 	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
E/AndroidRuntime(20717): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
E/AndroidRuntime(20717): 	at android.os.Handler.dispatchMessage(Handler.java:106)
E/AndroidRuntime(20717): 	at android.os.Looper.loop(Looper.java:223)
E/AndroidRuntime(20717): 	at android.app.ActivityThread.main(ActivityThread.java:7656)
E/AndroidRuntime(20717): 	at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(20717): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
E/AndroidRuntime(20717): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
E/AndroidRuntime(20717): Caused by: java.util.concurrent.ExecutionException: java.lang.UnsatisfiedLinkError: dlopen failed: library "libflutter.so" not found
E/AndroidRuntime(20717): 	at java.util.concurrent.FutureTask.report(FutureTask.java:123)
E/AndroidRuntime(20717): 	at java.util.concurrent.FutureTask.get(FutureTask.java:193)
E/AndroidRuntime(20717): 	at io.flutter.embedding.engine.loader.FlutterLoader.ensureInitializationComplete(FlutterLoader.java:223)
E/AndroidRuntime(20717): 	... 29 more
E/AndroidRuntime(20717): Caused by: java.lang.UnsatisfiedLinkError: dlopen failed: library "libflutter.so" not found
E/AndroidRuntime(20717): 	at java.lang.Runtime.loadLibrary0(Runtime.java:1087)
E/AndroidRuntime(20717): 	at java.lang.Runtime.loadLibrary0(Runtime.java:1008)
E/AndroidRuntime(20717): 	at java.lang.System.loadLibrary(System.java:1664)
E/AndroidRuntime(20717): 	at io.flutter.embedding.engine.FlutterJNI.loadLibrary(FlutterJNI.java:141)
E/AndroidRuntime(20717): 	at io.flutter.embedding.engine.loader.FlutterLoader$1.call(FlutterLoader.java:174)
E/AndroidRuntime(20717): 	at io.flutter.embedding.engine.loader.FlutterLoader$1.call(FlutterLoader.java:166)
E/AndroidRuntime(20717): 	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
E/AndroidRuntime(20717): 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
E/AndroidRuntime(20717): 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
E/AndroidRuntime(20717): 	at java.lang.Thread.run(Thread.java:923)

In fact, it’s caused by the introduction of adaptation errors when the emulator or the real machine is running.
The easiest way to fix it:

        buildTypes {
            release {
                ndk {
                    abiFilters "armeabi",  "arm64-v8a", "armeabi-v7a"
                }
            }
            debug {
                ndk { //Here to add, otherwise the debug package will be a problem, the last three are optional, x86 recommended to add or part of the simulator returns error
                    abiFilters "armeabi",  "armeabi-v7a" , "arm64-v8a" , "x86"
                }
            }
        }

kubeadm join Add a New Note Error [How to Solve] 

[root@node03 ~]# kubeadm join 192.168.99.10:6443 --token ysrv0l.1d9f6g1ecgv5yryl \
>         --discovery-token-ca-cert-hash sha256:9f1adb5597a3df3df6afc86c8610792fd2e89840657380ddc56d9f4ba81d4c97 --ignore-preflight-errors=Swap
[preflight] Running pre-flight checks
	[WARNING Swap]: swap is enabled; production deployments should disable swap unless testing the NodeSwap feature gate of the kubelet
error execution phase preflight: couldn't validate the identity of the API Server: could not find a JWS signature in the cluster-info ConfigMap for token ID "ysrv0l"
To see the stack trace of this error execute with --v=5 or higher

As mentioned above, I read the last line of the error message mainly because the original token has expired

You can verify with the following command that there is no output

$ kubeadm token list
# There is no output here, indicating that there are no surviving tokens

Solution: Generate a new token

# execute in the note of master
kubeadm token create --print-join-command --ttl=0

Where --ttl=0 means that the generated token will never expire If there is no --ttl parameter, the default effective time is 24 hours

Vitis-AI Generate a Quantitative Model: NotImplementedError

Vitis AI reports an error when generating a quantitative model

Traceback (most recent call last):
  File "generate_model.py", line 191, in <module>
    run_main()
  File "generate_model.py", line 185, in run_main
    quantize(args.build_dir,args.quant_mode,args.batchsize)
  File "generate_model.py", line 160, in quantize
    quantizer = torch_quantizer(quant_mode, new_model, (rand_in), output_dir=quant_model)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/pytorch_nndct/apis.py", line 77, in __init__
    custom_quant_ops = custom_quant_ops)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/pytorch_nndct/qproc/base.py", line 122, in __init__
    device=device)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/pytorch_nndct/qproc/utils.py", line 175, in prepare_quantizable_module
    graph = parse_module(module, input_args)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/pytorch_nndct/qproc/utils.py", line 78, in parse_module
    module, input_args)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/pytorch_nndct/parse/parser.py", line 68, in __call__
    raw_graph, raw_params = graph_handler.build_torch_graph(graph_name, module, input_args)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/pytorch_nndct/parse/trace_helper.py", line 37, in build_torch_graph
    fw_graph, params = self._trace_graph_from_model(input_args, train)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/pytorch_nndct/parse/trace_helper.py", line 61, in _trace_graph_from_model
    train)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/pytorch_nndct/utils/jit_utils.py", line 235, in trace_and_get_graph_from_model
    graph, torch_out = _get_trace_graph()(model, args)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/torch/jit/__init__.py", line 277, in _get_trace_graph
    outs = ONNXTracedModule(f, _force_outplace, return_inputs, _return_inputs_states)(*args, **kwargs)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/torch/nn/modules/module.py", line 532, in __call__
    result = self.forward(*input, **kwargs)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/torch/jit/__init__.py", line 360, in forward
    self._force_outplace,
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/torch/jit/__init__.py", line 347, in wrapper
    outs.append(self.inner(*trace_inputs))
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/torch/nn/modules/module.py", line 530, in __call__
    result = self._slow_forward(*input, **kwargs)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/torch/nn/modules/module.py", line 516, in _slow_forward
    result = self.forward(*input, **kwargs)
  File "/opt/vitis_ai/conda/envs/vitis-ai-pytorch/lib/python3.6/site-packages/torch/nn/modules/module.py", line 96, in forward
    raise NotImplementedError
NotImplementedError

The possible reasons for the above problems are:
no forward implementation is added to the model

[Solved] keil arm_math Error: error:  #35: #error directive: “Define according the used Cortex cor

Import arm_math file and compile error:

..\application\arm_math.h(306): error:  #35: #error directive: "Define according the used Cortex cor

 

Solution: Add the following global macro definition
USE_HAL_DRIVER,STM32F407xx,ARM_MATH_CM4,__FPU_USED=1U,__FPU_PRESENT=1U,__CC_ARM,ARM_MATH_MATRIX_CHECK,ARM_MATH_ROUNDING

Sophus Library Issues (Reasons & Solutions)

This blog records the errors encountered in the process of using sophus.

1. Cannot find header file fatal error: sophus/SO3 HPP: no such file or directory

1.1 problem description

fatal error: sophus/so3.hpp: no such file or directory

Reason:
GitHub is now a new version of sophus, which is based on the template class, and its corresponding header file is .h, while the header file corresponding to sophus based on non-template class is .hpp, so an error will be reported.

1.2 solutions

Put in the code

#include "sophus/so3.hpp"
#include "sophus/se3.hpp"

sophus::sophus SO3d;
sophus::sophus SE3d;

Change all to

#include "sophus/so3.h"
#include "sophus/se3.h"

sophus::sophus SO3;
sophus::sophus SE3;

2. /usr/bin/LD: not found - lsophus:: sophus

2.1 error reporting prompt

Compilation error

/usr/bin/ld: Could not find -lSophus::Sophus
/usr/bin/ld: Could not find -lSophus::Sophus
collect2: error: ld returned 1 exit status

2.2 solutions

My original cmake:

list(APPEND ALL_TARGET_LIBRARIES ${Sophus_LIBRARIES} Sophus::Sophus)
target_link_libraries( useSophus ${Sophus_LIBRARIES} Sophus::Sophus)

Modify to

list(APPEND ALL_TARGET_LIBRARIES ${Sophus_LIBRARIES})
target_link_libraries( useSophus ${Sophus_LIBRARIES})

[Solved] Jmeter Connect Database Error: Cannot create PoolableConnectionFactory

Recently, you have encountered such a problem in JMeter connection database:

Response message:java.sql.SQLException: Cannot create PoolableConnectionFactory (Unknown initial character set index '255' received from server. Initial client character set can be forced via the 'characterEncoding' property.)

 

The reason for this error is the coding problem, as shown in the following figure:

Modify the Database URL in JDBC Connection Configuration to

jdbc:mysql://127.0.0.1:{port_number}/{db_name}?useUnicode=true&characterEncoding=utf8

For example: jdbc:mysql://127.0.0.1:3306/stu?useUnicode=true&characterEncoding=utf8

The problem is solved~

Django CSV file Error: UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xb5 in position 0: invalid start

UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xb5 in position 0: invalid start

This csv file I opened in jupyter using pd.read_csv open no problem

But after I cleaned the data and saved it as a new csv, I couldn’t open it and got an error

Solution: in the views.py direct cleaning work, the data will be stored in order into a list, using a loop to iterate through the database, the following is the code (less efficient after all is iterative. Welcome to share a better way)

df = pd.read_csv(r"xxxxx\xxx.csv", encoding='utf-8')
... # datas clean up
ls = []
for index, row in df.iterrows():
     res = []
     for i in df:
         res.append(row[i])
            ls.append(res)
for i in range(len(ls)):
    try:
        XXX.objects.create(title=ls[i][0], rating=ls[i][1])
    except Exception as e:
        print(e)
return HttpResponse('Datas save successfully')