Author Archives: Robins

How to Solve Navicat open view error

View ‘orgemp.view_allempinfo’ references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them

Right click to open the view design, click the top to optimize SQL and check the view SQL.

Check whether the view table does not exist or the field does not exist.

[Solved] fragment error: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myapplication/com.example.myapplication.MainActivity}…

1. Error Messages:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myapplication/com.example.myapplication.MainActivity}: android.view.InflateException: Binary XML file line #9 in com.example.myapplication:layout/activity_main: Binary XML file line #9 in com.example.myapplication:layout/activity_main: Error inflating class fragment.
2. Locating the problem
Check the logs and find that the problem is located at: at com.example.myapplication.MainActivity.onCreate(MainActivity.java:11), click to jump to the line of code that says

  setContentView(R.layout.activity_main);

It was found that it was an XML file problem, so I carefully checked a piece of code I used fragment

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <fragment
        android:name="com.example.myapplication.fragment.MyFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

It was found that the problem was caused by the fact that the fragment did not use the layout ID. after I added the ID to the fragment, the problem was successfully solved.

 <fragment
        android:id="@+id/my_fragment"
        android:name="com.example.myapplication.fragment.MyFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

How to Solve Pycharm SQL Union Error

Question

Today, when writing MySQL code in pycharm, I always encounter errors when using Union. Although the syntax itself is correct, the red horizontal line is annoying

It’s just that you have to change union to union all to eliminate the error report.

Press setting -> editor-> Inspections, then find no data sources configured under the SQL on the right, and cancel all related to the red exclamation mark, but it is still fruitless.

However, inspired by the article, the reason for the problem is found in the location of the configuration database

Solution:

The configuration database is in file -> Settings -> Languages & Frameworks -> SQL conversations
the reason for the problem is that I configured the database before. At that time, Clickhouse was configured, which is different from MySQL in the usage of union,
so just change Clickhouse to MySQL.

before change

modified

This will return to normal~

[Solved] Flink TableAPI Error — > Class cannot be found

Console error:

"C:\Program Files\Java\jdk1.8.0_201\bin\java.exe" "-javaagent:D:\ideaSoftware\IntelliJ IDEA 2020.2.3\lib\idea_rt.jar=52126:D:\ideaSoftware\IntelliJ IDEA 2020.2.3\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_201\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\rt.jar;D:\Conding_pojoect\MyFlink\target\classes;D:\MyTools\repository\org\apache\flink\flink-clients_2.12\1.9.3\flink-clients_2.12-1.9.3.jar;D:\MyTools\repository\org\apache\flink\flink-core\1.9.3\flink-core-1.9.3.jar;D:\MyTools\repository\org\apache\flink\flink-annotations\1.9.3\flink-annotations-1.9.3.jar;D:\MyTools\repository\org\apache\flink\flink-metrics-core\1.9.3\flink-metrics-core-1.9.3.jar;D:\MyTools\repository\org\apache\flink\flink-shaded-asm-6\6.2.1-7.0\flink-shaded-asm-6-6.2.1-7.0.jar;D:\MyTools\repository\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar;D:\MyTools\repository\com\esotericsoftware\kryo\kryo\2.24.0\kryo-2.24.0.jar;D:\MyTools\repository\com\esotericsoftware\minlog\minlog\1.2\minlog-1.2.jar;D:\MyTools\repository\org\objenesis\objenesis\2.1\objenesis-2.1.jar;D:\MyTools\repository\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar;D:\MyTools\repository\org\apache\commons\commons-compress\1.18\commons-compress-1.18.jar;D:\MyTools\repository\org\apache\flink\flink-runtime_2.12\1.9.3\flink-runtime_2.12-1.9.3.jar;D:\MyTools\repository\org\apache\flink\flink-queryable-state-client-java\1.9.3\flink-queryable-state-client-java-1.9.3.jar;D:\MyTools\repository\org\apache\flink\flink-hadoop-fs\1.9.3\flink-hadoop-fs-1.9.3.jar;D:\MyTools\repository\commons-io\commons-io\2.4\commons-io-2.4.jar;D:\MyTools\repository\org\apache\flink\flink-shaded-netty\4.1.32.Final-7.0\flink-shaded-netty-4.1.32.Final-7.0.jar;D:\MyTools\repository\org\apache\flink\flink-shaded-jackson\2.10.1-9.0\flink-shaded-jackson-2.10.1-9.0.jar;D:\MyTools\repository\org\javassist\javassist\3.19.0-GA\javassist-3.19.0-GA.jar;D:\MyTools\repository\org\scala-lang\scala-library\2.12.7\scala-library-2.12.7.jar;D:\MyTools\repository\com\typesafe\akka\akka-actor_2.12\2.5.21\akka-actor_2.12-2.5.21.jar;D:\MyTools\repository\com\typesafe\config\1.3.3\config-1.3.3.jar;D:\MyTools\repository\org\scala-lang\modules\scala-java8-compat_2.12\0.8.0\scala-java8-compat_2.12-0.8.0.jar;D:\MyTools\repository\com\typesafe\akka\akka-stream_2.12\2.5.21\akka-stream_2.12-2.5.21.jar;D:\MyTools\repository\org\reactivestreams\reactive-streams\1.0.2\reactive-streams-1.0.2.jar;D:\MyTools\repository\com\typesafe\ssl-config-core_2.12\0.3.7\ssl-config-core_2.12-0.3.7.jar;D:\MyTools\repository\org\scala-lang\modules\scala-parser-combinators_2.12\1.1.1\scala-parser-combinators_2.12-1.1.1.jar;D:\MyTools\repository\com\typesafe\akka\akka-protobuf_2.12\2.5.21\akka-protobuf_2.12-2.5.21.jar;D:\MyTools\repository\com\typesafe\akka\akka-slf4j_2.12\2.5.21\akka-slf4j_2.12-2.5.21.jar;D:\MyTools\repository\org\clapper\grizzled-slf4j_2.12\1.3.2\grizzled-slf4j_2.12-1.3.2.jar;D:\MyTools\repository\com\github\scopt\scopt_2.12\3.5.0\scopt_2.12-3.5.0.jar;D:\MyTools\repository\org\xerial\snappy\snappy-java\1.1.4\snappy-java-1.1.4.jar;D:\MyTools\repository\com\twitter\chill_2.12\0.7.6\chill_2.12-0.7.6.jar;D:\MyTools\repository\com\twitter\chill-java\0.7.6\chill-java-0.7.6.jar;D:\MyTools\repository\org\apache\flink\flink-optimizer_2.12\1.9.3\flink-optimizer_2.12-1.9.3.jar;D:\MyTools\repository\org\apache\flink\flink-java\1.9.3\flink-java-1.9.3.jar;D:\MyTools\repository\commons-cli\commons-cli\1.3.1\commons-cli-1.3.1.jar;D:\MyTools\repository\org\slf4j\slf4j-api\1.7.15\slf4j-api-1.7.15.jar;D:\MyTools\repository\com\google\code\findbugs\jsr305\1.3.9\jsr305-1.3.9.jar;D:\MyTools\repository\org\apache\flink\force-shading\1.9.3\force-shading-1.9.3.jar;D:\MyTools\repository\org\projectlombok\lombok\1.18.2\lombok-1.18.2.jar;D:\MyTools\repository\org\apache\flink\flink-streaming-java_2.12\1.9.3\flink-streaming-java_2.12-1.9.3.jar;D:\MyTools\repository\org\apache\flink\flink-shaded-guava\18.0-7.0\flink-shaded-guava-18.0-7.0.jar;D:\MyTools\repository\org\apache\commons\commons-math3\3.5\commons-math3-3.5.jar;D:\MyTools\repository\org\apache\bahir\flink-connector-redis_2.11\1.0\flink-connector-redis_2.11-1.0.jar;D:\MyTools\repository\org\apache\flink\flink-streaming-java_2.11\1.2.0\flink-streaming-java_2.11-1.2.0.jar;D:\MyTools\repository\org\apache\flink\flink-runtime_2.11\1.2.0\flink-runtime_2.11-1.2.0.jar;D:\MyTools\repository\org\apache\flink\flink-shaded-hadoop2\1.2.0\flink-shaded-hadoop2-1.2.0.jar;D:\MyTools\repository\org\tukaani\xz\1.0\xz-1.0.jar;D:\MyTools\repository\xmlenc\xmlenc\0.52\xmlenc-0.52.jar;D:\MyTools\repository\commons-codec\commons-codec\1.4\commons-codec-1.4.jar;D:\MyTools\repository\commons-net\commons-net\3.1\commons-net-3.1.jar;D:\MyTools\repository\javax\servlet\servlet-api\2.5\servlet-api-2.5.jar;D:\MyTools\repository\org\mortbay\jetty\jetty-util\6.1.26\jetty-util-6.1.26.jar;D:\MyTools\repository\com\sun\jersey\jersey-core\1.9\jersey-core-1.9.jar;D:\MyTools\repository\commons-el\commons-el\1.0\commons-el-1.0.jar;D:\MyTools\repository\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;D:\MyTools\repository\com\jamesmurty\utils\java-xmlbuilder\0.4\java-xmlbuilder-0.4.jar;D:\MyTools\repository\commons-lang\commons-lang\2.6\commons-lang-2.6.jar;D:\MyTools\repository\commons-configuration\commons-configuration\1.7\commons-configuration-1.7.jar;D:\MyTools\repository\commons-digester\commons-digester\1.8.1\commons-digester-1.8.1.jar;D:\MyTools\repository\org\codehaus\jackson\jackson-core-asl\1.8.8\jackson-core-asl-1.8.8.jar;D:\MyTools\repository\org\codehaus\jackson\jackson-mapper-asl\1.8.8\jackson-mapper-asl-1.8.8.jar;D:\MyTools\repository\org\apache\avro\avro\1.7.7\avro-1.7.7.jar;D:\MyTools\repository\com\thoughtworks\paranamer\paranamer\2.3\paranamer-2.3.jar;D:\MyTools\repository\com\jcraft\jsch\0.1.42\jsch-0.1.42.jar;D:\MyTools\repository\commons-beanutils\commons-beanutils-bean-collections\1.8.3\commons-beanutils-bean-collections-1.8.3.jar;D:\MyTools\repository\commons-daemon\commons-daemon\1.0.13\commons-daemon-1.0.13.jar;D:\MyTools\repository\javax\xml\bind\jaxb-api\2.2.2\jaxb-api-2.2.2.jar;D:\MyTools\repository\javax\xml\stream\stax-api\1.0-2\stax-api-1.0-2.jar;D:\MyTools\repository\javax\activation\activation\1.1\activation-1.1.jar;D:\MyTools\repository\io\netty\netty-all\4.0.27.Final\netty-all-4.0.27.Final.jar;D:\MyTools\repository\com\data-artisans\flakka-actor_2.11\2.3-custom\flakka-actor_2.11-2.3-custom.jar;D:\MyTools\repository\com\data-artisans\flakka-remote_2.11\2.3-custom\flakka-remote_2.11-2.3-custom.jar;D:\MyTools\repository\io\netty\netty\3.8.0.Final\netty-3.8.0.Final.jar;D:\MyTools\repository\org\uncommons\maths\uncommons-maths\1.2.2a\uncommons-maths-1.2.2a.jar;D:\MyTools\repository\com\data-artisans\flakka-slf4j_2.11\2.3-custom\flakka-slf4j_2.11-2.3-custom.jar;D:\MyTools\repository\org\clapper\grizzled-slf4j_2.11\1.0.2\grizzled-slf4j_2.11-1.0.2.jar;D:\MyTools\repository\com\github\scopt\scopt_2.11\3.2.0\scopt_2.11-3.2.0.jar;D:\MyTools\repository\com\fasterxml\jackson\core\jackson-core\2.7.4\jackson-core-2.7.4.jar;D:\MyTools\repository\com\fasterxml\jackson\core\jackson-databind\2.7.4\jackson-databind-2.7.4.jar;D:\MyTools\repository\com\fasterxml\jackson\core\jackson-annotations\2.7.0\jackson-annotations-2.7.0.jar;D:\MyTools\repository\org\apache\zookeeper\zookeeper\3.4.6\zookeeper-3.4.6.jar;D:\MyTools\repository\org\slf4j\slf4j-log4j12\1.6.1\slf4j-log4j12-1.6.1.jar;D:\MyTools\repository\log4j\log4j\1.2.16\log4j-1.2.16.jar;D:\MyTools\repository\jline\jline\0.9.94\jline-0.9.94.jar;D:\MyTools\repository\junit\junit\3.8.1\junit-3.8.1.jar;D:\MyTools\repository\com\twitter\chill_2.11\0.7.4\chill_2.11-0.7.4.jar;D:\MyTools\repository\org\apache\flink\flink-clients_2.11\1.2.0\flink-clients_2.11-1.2.0.jar;D:\MyTools\repository\org\apache\flink\flink-optimizer_2.11\1.2.0\flink-optimizer_2.11-1.2.0.jar;D:\MyTools\repository\org\apache\sling\org.apache.sling.commons.json\2.0.6\org.apache.sling.commons.json-2.0.6.jar;D:\MyTools\repository\redis\clients\jedis\2.8.0\jedis-2.8.0.jar;D:\MyTools\repository\org\apache\commons\commons-pool2\2.3\commons-pool2-2.3.jar;D:\MyTools\repository\org\apache\flink\flink-statebackend-rocksdb_2.12\1.10.1\flink-statebackend-rocksdb_2.12-1.10.1.jar;D:\MyTools\repository\com\data-artisans\frocksdbjni\5.17.2-artisans-2.0\frocksdbjni-5.17.2-artisans-2.0.jar;D:\MyTools\repository\mysql\mysql-connector-java\8.0.25\mysql-connector-java-8.0.25.jar;D:\MyTools\repository\com\google\protobuf\protobuf-java\3.11.4\protobuf-java-3.11.4.jar;D:\MyTools\repository\org\apache\flink\flink-table-planner_2.12\1.10.1\flink-table-planner_2.12-1.10.1.jar;D:\MyTools\repository\org\apache\flink\flink-table-common\1.10.1\flink-table-common-1.10.1.jar;D:\MyTools\repository\org\apache\flink\flink-shaded-asm-7\7.1-9.0\flink-shaded-asm-7-7.1-9.0.jar;D:\MyTools\repository\org\apache\flink\flink-table-api-java-bridge_2.12\1.10.1\flink-table-api-java-bridge_2.12-1.10.1.jar;D:\MyTools\repository\org\apache\flink\flink-table-api-scala-bridge_2.12\1.10.1\flink-table-api-scala-bridge_2.12-1.10.1.jar;D:\MyTools\repository\org\apache\flink\flink-scala_2.12\1.10.1\flink-scala_2.12-1.10.1.jar;D:\MyTools\repository\org\apache\flink\flink-streaming-scala_2.12\1.10.1\flink-streaming-scala_2.12-1.10.1.jar;D:\MyTools\repository\org\apache\flink\flink-table-planner-blink_2.12\1.10.1\flink-table-planner-blink_2.12-1.10.1.jar;D:\MyTools\repository\org\apache\flink\flink-table-api-java\1.10.1\flink-table-api-java-1.10.1.jar;D:\MyTools\repository\org\apache\flink\flink-table-api-scala_2.12\1.10.1\flink-table-api-scala_2.12-1.10.1.jar;D:\MyTools\repository\org\scala-lang\scala-reflect\2.12.7\scala-reflect-2.12.7.jar;D:\MyTools\repository\org\scala-lang\scala-compiler\2.12.7\scala-compiler-2.12.7.jar;D:\MyTools\repository\org\scala-lang\modules\scala-xml_2.12\1.0.6\scala-xml_2.12-1.0.6.jar;D:\MyTools\repository\org\apache\flink\flink-table-runtime-blink_2.12\1.10.1\flink-table-runtime-blink_2.12-1.10.1.jar;D:\MyTools\repository\org\codehaus\janino\janino\3.0.9\janino-3.0.9.jar;D:\MyTools\repository\org\codehaus\janino\commons-compiler\3.0.9\commons-compiler-3.0.9.jar;D:\MyTools\repository\org\apache\calcite\avatica\avatica-core\1.15.0\avatica-core-1.15.0.jar;D:\MyTools\repository\org\reflections\reflections\0.9.10\reflections-0.9.10.jar" Com.ZQQQ.TableAPI.Example
21:39:36,292 INFO  org.apache.flink.api.java.typeutils.TypeExtractor             - class org.apache.flink.streaming.api.functions.source.TimestampedFileInputSplit does not contain a setter for field modificationTime
21:39:36,293 INFO  org.apache.flink.api.java.typeutils.TypeExtractor             - Class class org.apache.flink.streaming.api.functions.source.TimestampedFileInputSplit cannot be used as a POJO type because not all fields are valid POJO fields, and must be processed as GenericType. Please read the Flink documentation on "Data Types & Serialization" for details of the effect on performance.
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/flink/configuration/ReadableConfig
	at org.apache.flink.table.planner.StreamPlannerFactory.create(StreamPlannerFactory.java:49)
	at org.apache.flink.table.api.java.internal.StreamTableEnvironmentImpl.create(StreamTableEnvironmentImpl.java:120)
	at org.apache.flink.table.api.java.StreamTableEnvironment.create(StreamTableEnvironment.java:112)
	at org.apache.flink.table.api.java.StreamTableEnvironment.create(StreamTableEnvironment.java:83)
	at Com.ZQQQ.TableAPI.Example.main(Example.java:35)
Caused by: java.lang.ClassNotFoundException: org.apache.flink.configuration.ReadableConfig
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 5 more

Process finished with exit code 1

Reason for the error.
It is caused by the inconsistency between the Flink version and the tableAPI version.
Solution.
Change all the pom.xml that involve flink version to the same version.

I configure the pom.xml file as follows

  <!-- https://mvnrepository.com/artifact/org.apache.flink/flink-streaming-java -->
    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-streaming-java_2.12</artifactId>
        <version>1.10.1</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.bahir/flink-connector-redis -->
    <dependency>
        <groupId>org.apache.bahir</groupId>
        <artifactId>flink-connector-redis_2.11</artifactId>
        <version>1.0</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.flink/flink-statebackend-rocksdb -->
    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-statebackend-rocksdb_2.12</artifactId>
        <version>1.10.1</version>
    </dependency>
	
        <!--TableAPI-->
    <!-- https://mvnrepository.com/artifact/org.apache.flink/flink-table-planner -->
    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-table-planner_2.12</artifactId>
        <version>1.10.1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-table-planner-blink_2.12</artifactId>
        <version>1.10.1</version>
    </dependency>

R Language: How to Solve featureplot function Error

This kind of error occurs when you run the featureplot function and want to generate a scatter diagram using ellipses, but the image cannot be generated due to the lack of ellipsse package. The error code is

Error in grid.Call.graphics(C_downviewport, name$name, strict) : 
  Viewport 'plot_01.panel.1.1.off.vp' was not found

Solution: only install the ellipse package, not the library, and then rerun the previous featureplot function.

install.packages("ellipse")

How to Solve Gazebo code 127

When I had installed Gzebo 9 and run gazebo report an error as below:
[gazebo-2] process has died [pid 4668, exit code 127, cmd /opt/ros/melodic/lib/gazebo_ros/gzserver -e ode /home/xx/husky_ws/src/husky/husky_gazebo/worlds/dyn4.world __name:=gazebo __log:=/home/xx/.ros/log/26a8dda8-7dad-11ec-ac2c-68545a5636b4/gazebo-2.log].
log file: /home/xx/.ros/log/26a8dda8-7dad-11ec-ac2c-68545a5636b4/gazebo-2*.log
[gazebo_gui-3] process has died [pid 4670, exit code 127, cmd /opt/ros/melodic/lib/gazebo_ros/gzclient __name:=gazebo_gui __log:=/home/xx/.ros/log/26a8dda8-7dad-11ec-ac2c-68545a5636b4/gazebo_gui-3.log].
log file: /home/xx/.ros/log/26a8dda8-7dad-11ec-ac2c-68545a5636b4/gazebo_gui-3*.log

 

Solution:

sudo apt-get upgrade

[Solved] Unity Error: Got null handle from IDXGIResource::GetSharedHandle

preface

Unity reports an error when playing the video: got null handle from idxgiresource:: getsharedhandle, which shows that the running program cannot play the video, but the sound can be heard. This problem is likely to be related to AMD’s unique display. If this error occurs, you can try the following solutions.

This solution takes the windows platform as an example, and other platform solutions are similar.

Solution

First of all, ensure the normal operation of the computer amd display driver, and ensure that unity automatically calls amd display. (if unity does not automatically call amd graphics card, you can add unity program at amd graphics card control panel.)

Open Edit - project settings in unity, select player , select PC platform, uncheck auto graphics APIs for windows in the options of other settings , and add Vulkan at graphics APIs for windows below the options, Delete or adjust the default direct3d11 to Vulkan , as shown in the following figure. After adjustment, you will be prompted to restart the unity editor. You can restart it. If you try to run again, you will not report an error.

How to Solve Python3.9 Install pycrypto Error

1. If VS2019 BuildTools and its corresponding VC++14 library are installed on the machine, go directly to C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.29.30133\include Copy the stdint.h file to the C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\ucrt directory in the directory (*14.29.30133 is the version number, which may be different depending on the version you installed) ;

2. Modify the C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\ucrt\inttypes.h file: change the line 14

#include <stdint.h>

Change to

#include "stdint.h"

3. Execute in CMD

set CL=/FI"%VCINSTALLDIR%\\INCLUDE\\stdint.h" %CL%

4. Execute PIP3 install pycrypto or pip install pycrypto to install.

How to Solve elasticsearch root user start Error

Question: Java lang.RuntimeException: can not run elasticsearch as root

Solution:

Elaticsearch cannot be started by root by default, so it will report Java.Lang.runtimeException: can not run elasticsearch as root.

There are two types of solutions:

1. Modify the elaticsearch configuration to allow the root user to start (not recommended)

#Add the parameter -Des.insecure.allow.root=true when executing elasticSearch, the complete command is as follows

./elasticsearch -Des.insecure.allow.root=true

#Or open the elasticsearch executable file with vi, and add the following command before the variable ES_JAVA_OPTS is used

ES_JAVA_OPTS="-Des.insecure.allow.root=true"

2. Create users for elaticsearch and grant corresponding permissions

adduser es

passwd es

chown -R es:es elasticsearch-6.3.2/

chmod 770 elasticsearch-6.3.2/