Author Archives: Robins

Error messages of copying files to Linux system by PSCP in Windows operating system

First try: PSCP – I & lt; Local storage path of private key file & gt& lt; Windows local file & gt; [email protected] :/home/jerry

Encountered error message: server reused our key

Fatal Error: No supported authentication methods available (server sent: publickey )

Take a closer look. In my putty, the host name is ubuntu@VM-0-2-ubuntu So I replaced root in the command line with Ubuntu:

After that, the error message becomes: unable to open/home/Jerry/xxx.zip: permission denied

The reason is that I created the Jerry directory through sudo command:

The LS command shows that both the owner and the owner’s group are root users, so you will encounter permission problems

Use the chown command to change the owner of the Jerry folder back to a Ubuntu user

sudo chown -R ubuntu jerry

After that, PSCP is executed successfully

More original articles by Jerry can be found in “Wang Zixi”:

Can not start, can not find QT pligins “windows” problem after installing QT vs environment 2021-06-13

After QT vs environment is installed, the generated program can not start

Problem reason: Windows kit is not configured to system environment variables
solution: add environment variables

Could not install Gradle distribution

New computer, new Android studio 4.2, new first project error:

Could not install Gradle distribution from 'https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip'

Solution:
(1) click the link in the error message:
1 https://services.gradle.org/distributions/gradle-6.7.1-bin.zip
Download the compressed package to the specified path and unzip it
(2) click file – & gt; Settings-> Build, Execution,Deployment-> Build Tools-> Gradle, in the gradle projects area, change use gradle from to your own download path, retry:

(3) Successful solution:

Creating Server TCP listening socket 127.0.0.1:6379: bind: No error。。。 Solutions to problems encountered in startup

D:\redis>redis-server.exe redis.windows.conf
[9952] 03 Jul 15:48:22.538 # Creating Server TCP listening socket 127.0.0.1:6379: bind: No error

D:\redis>redis-cli.exe
127.0.0.1:6379> shutdown
(0.51s)
not connected> exit

D:\redis>redis-server.exe redis.windows.conf
                _._
           _.-``__ ''-._
      _.-``    `.  `_.  ''-._           Redis 3.2.100 (00000000/0) 64 bit
  .-`` .-```.  ```\/    _.,_ ''-._
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._   /    _.-'    |     PID: 16908
  `-._    `-._  `-./  _.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |           http://redis.io
  `-._    `-._`-.__.-'_.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |
  `-._    `-._`-.__.-'_.-'    _.-'
      `-._    `-.__.-'    _.-'
          `-._        _.-'
              `-.__.-'

[16908] 03 Jul 15:49:06.195 # Server started, Redis version 3.2.100
[16908] 03 Jul 15:49:06.246 * DB loaded from disk: 0.049 seconds
[16908] 03 Jul 15:49:06.246 * The server is now ready to accept connections on port 6379

Failed to download resource “expect_bottle_manifest“

When we are in brew install XXXX, we will encounter this kind of problem

curl: (22) The requested URL returned error: 404 Not Found
Warning: Bottle missing, falling back to the default domain...
==> Downloading https://ghcr.io/v2/homebrew/core/autoconf/manifests/2.69-4

curl: (22) The requested URL returned error: 404 
Error: Failed to download resource "autoconf_bottle_manifest"
Download failed: https://ghcr.io/v2/homebrew/core/autoconf/manifests/2.69-4

The prompt said that one of the supporting plug-ins could not be installed, which was very annoying

This is the time we should visit https://bintray.com/ Website, to search the version of the software you can’t download

Find the software and download it, then put it on the local computer

/In usr/local/cell/folder, and then execute brew install XXX on the terminal,
You will find that this software is no longer needed to download

On the solution of fileprovider conflict

Fileprovider conflict resolution

Because the Maven service of Weibo sharing SDK is abnormal, the Maven automatic integration fails, so the AAR file of Weibo 10.10.0 is downloaded for local integration. Error report after adding project android:resource= “@xml/file_ XXX “reuse does not work 1. Upgrade compilesdkversion = 29
2. Add tools:replace= “ android:resource ”Go to the following figure

   <provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="${applicationId}.fileProvider"
            android:exported="false"
            android:grantUriPermissions="true"
            tools:replace="android:authorities">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_xxx"
                tools:replace="android:resource" />
        </provider>

solve

Shell removes double quotes from strings

Related commands:

sed 's/\"//g'

Examples are as follows:

[test@localhost ~]# echo \"hello\" | sed 's/\"//g'
hello
[test@localhost ~]# echo \"hello\"
"hello"
[test@localhost ~]# cat test.log
"hello"
[test@localhost ~]# cat test.log | sed 's/\"//g'
hello

DB2 timed task execution stored procedure cannot complete scheduler thread’s initialization

The following reports have been made in the implementation of failure checks.

2021-06-09-14.46.11.868000-420 I16975H265 LEVEL: Error PID : 1412 TID : 1800 FUNCTION: DB2 Tools, DB2 administration server, SchedulerThread_run, SchedulerThread_run, probe:5 DATA String, 50 bytes cannot complete scheduler thread’s initialization! 2008-05-01-14.46.16.868000-420 I170042H386 LEVEL: Error PID : 1412 TID : 1800 FUNCTION: DB2 Tools, DB2 administration server, MDUtility: :connectMD, MDUtility probe:10 DATA Sint32, 4 bytes – 300 DATA #2 : Sint32, 4 bytes 0 DATA #3 : Sint32, 4 bytes 0 DATA #4 : String, 7 bytes TOOLSDB DATA #5 : String, 8 bytes SYSTOLS DATA #6 : String, 4 bytes NULL

Reference is made to the website: https://www.ibm.com/support/pages/db2-scheduler-thread-initialization-error-db2diaglog
>

Yes

Mongodb caused 127.0.0.1:27017 unable to connect

The main reason is abnormal shutdown.
if you have abnormal shutdown operation, please try the following methods

mongod --dbpath  /usr/local/mongodb/data  --logpath  /usr/local/mongodb/mongod.log  --fork

Dbpath is your data configuration path
logpath is your log path
through this command, similar to windows restart services Service

The background object of thymeleaf is null, which solves the problem of error when the object is empty to get the property value

The sale object passed from the background is sale = null

 ${sale.warrantyPeriod}

You will be prompted that warrantyperiod cannot be found. Change it to the following:

 th:value="${sale?.warrantyPeriod}"

If the object is empty, the output is empty; if the object exists, the output property value.

SLF4J: Class path contains multiple SLF4J bindings.

The error is shown in the figure

The reason for this error is that there are two bridges when the log information is generated, and the conflict results in error.

The solution is as follows:

Find the structure diagram in the POM file, and press and hold the Cril key to enlarge the diagram

Find the dependency as shown in the figure below, because there are two bridge conflicts, we only need to eliminate one

As shown in the figure below, right-click the logback classic we found and left-click exclude

At this point, our modification is good. Return to our POM file and update our modification, as shown in the following figure:

At this point, we can run our project again and find that our mistakes are gone, as shown in the figure below.

Asset database transaction committed tweet appears when unity reports an error!

Why does asset database transaction committed tweet appear in unity
Assertion failed on expression: ‘m_ ErrorCode == MDB_ MAP_ RESIZED || ! HasAbortingErrors()’

Solution:
save the file, re open the unity or activate the license, you can get the solution
cause: error caused by resource loss, or license expiration.

The error of is shown in the figure

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