This relative module was not found:
I checked it for a long time and found nothing wrong. Finally, I took a look at the directory
I first created an empty project… And then created another project in the empty project by using the terminal command NPM create. The result is that when NPM install XXX is followed, it is in the parent directory of vuero. Therefore, an error will be reported when starting vuero,
in addition, try to use cnpm install XXX instead of NPM insatl XXX
Installing MySQL
is running
mysqld --initialize --console
An error was encountered while
2021-11-06T18:04:30.907573Z 0 [ERROR] [MY-010338] [Server] Can't find error-message file 'C: ofterwaresetting\mySQL\mysql-8.0.11-winx64 hare\english\errmsg.sys'. Check error-message file location and 'lc-messages-dir' configuration directive.
After checking many tutorials, I finally found that there was a problem with the escape character:
https://bugs.mysql.com/bug.php?id=90364
In short, change the path to double slash \ in my.ini file,
for example:
basedir=C:\\softerwaresetting\\mySQL\\mysql-8.0.11-winx64
datadir=C:\\softerwaresetting\\mySQL\\mysql-8.0.11-winx64\\Data
lc-messages-dir=C:\\softerwaresetting\\mySQL\\mysql-8.0.11-winx64\\share\\english
RuntimeError: The session is unavailable because no secret key was set. Set the secret_ key on the application to something unique and secret.
When we run the flash project on the Linux system, we encounter this error:
Solution:
Basically, on the Internet, you can set secret under the flash object app_ Key:
if it is added to the startup file of my project, I can successfully run the project under windows10. If it cannot succeed on the Linux system, it still reports an error
if it is added to the startup file of my project, it can run successfully on Linux
https://www.jianshu.com/p/6d8ed7c36e6f
368160;-net start mysql29616;- 38169;- 35823s;
error 2 has occurred. The system cannot find the file specified.
Solution:
run as an administrator and enter the installation path of CD + MySQL bin directory on the command line
C:\WINDOWS\system32>cd C:\softerwaresetting\mySQL\mysql-8.0.11-winx64\bin
C:\softerwaresetting\mySQL\mysql-8.0.11-winx64\bin>mysqld --remove
Service successfully removed.
C:\softerwaresetting\mySQL\mysql-8.0.11-winx64\bin>mysqld --install
Service successfully installed.
C:\softerwaresetting\mySQL\mysql-8.0.11-winx64\bin>net start mysql
The MySQL service is starting.
The MySQL service was started successfully.
Error explanation: This error indicates that no such directory exists, which generally means that the global variable of command XXX is not set
The full name of enoent is error no entry, and there is no error in the entity directory;
Example: scaffold occurs when NPM installation directory is used, and spawn git enoent error occurs
Solution: it means that Git is not installed or the GIT environment variable is not set. Add “C:\program files\git\bin” in the path of the environment variable. The path is adjusted according to your git installation directory
Error 13 is always reported when writing files. There is no problem viewing directory permissions. Finally, find the following solutions
Write files under Linxu
If you want to use the read and write functions, you must meet the following requirements
The current user is the root user
secure_file_priv is empty, or the folder to be written is just a specific folder of secure_file_priv
The folder where the shell is written must have 777 permissions, otherwise the writing will fail
File size, must be less than max_allowd_packet to
meet the above requirements in order to be written normally
Edit the file/etc/my.cof
Add
under [mysqld]
secure_file_priv =/var/www/html
MySQL view
and then
chmod 777 /var/www/html
Finally, restart the database
Failed to close firewall vm8:
Step 1:
yum install iptables-services
Step 2:
systemctl stop firewalld
Unable to add module to the current project as it is not of packaging type ‘pom’
I modified two places. You can have a try,
1. My original java version number was 15.0. Later, I added it completely according to version number 15 under Java – variant
<!-- java version -->
<profile>
<id>jdk-15</id>
<activation>
<activeByDefault>true</activeByDefault>
<jdk>15</jdk>
</activation>
<properties>
<maven.compiler.source>15</maven.compiler.source>
<maven.compiler.target>15</maven.compiler.target>
<maven.compiler.compilerVersion>15</maven.compiler.compilerVersion>
</properties>
</profile>
I suggest you complete it
2. I wrote a POM myself in the original project directory, and I deleted it
the second one I tested. The pom.xml file cannot be found in the directory where the project is to be created
then run the generate command to successfully create the project
Problems encountered when nuxt uses image lazy loading, when & lt; lazy-component> tag is still normal, but after it is used, more than 40 exceptions will be prompted directly
found later. It needs to be found in & lt; lazy-component> & lt; no-ssr> label is good
<no-ssr>
<lazy-component>
...
</lazy-component>
</no-ssr>
Personal blog address: nuxt uses pictures to load lazy component tags and reports an error
1. Make test script
First, we need to make a script to test whether the self startup is effective.
pi@raspberry :~ $ nano /home/pi/start.sh
The contents of start.sh are as follows:
/usr/bin/python3 /home/pi/GeometryOperations.py
Here, you must pay attention to the use of absolute paths, otherwise there is a probability that the load will fail.
Then add an execution file to the script file
pi@raspberry :~ $ chmod 777 start.sh
Test the script function
pi@raspberry :~ $ ./start.sh
If you observe that the program is running normally, you can continue to the next step
2. Add self start
Modify rc.local file
pi@raspberry :~ $ sudo nano /etc/rc.local
Find exit 0 in the text. The code added before will be executed at startup. Add a line of code before exit 0:
su pi -c “exec /home/pi/start.sh &”
CTRL + O to save, Ctrl + X to exit and restart.
pi@raspberry :~ $ sudo reboot
After restart, the program can run.
3.DEBUG
If the raspberry pie does not respond after restart, you can check the status of RC local through systemctl
pi@raspberry :~ $ sudo systemctl status rc-local
After you go in, you can see the status of each step after you start up and check where the error will be reported.
4. Possible error reports
Process:454 ExecStart=/etc/rc.local start (code=exited,status=1/FAILURE)
This error is probably due to the script file
if you just start, you must write the file path as an absolute path, otherwise an error will be reported.
error: (-2:Unspecified error) Can’t initialize GTK backend in function ‘cvInitSystem’
This error will be reported if the self startup program contains code with window operation such as OpenCV
The reason is caused by the following sentence
su pi -c “exec /home/pi/start.sh &”
If your command needs to run for a long time (such as an endless loop) or cannot exit after running, you must ensure that the “& amp;” symbol is added at the end of the command to make the command run in its background
If the code contains window interface operations similar to the following
cv2.namedWindow(‘Cap’)
cv2.imshow(‘Cap’, frame)
It will conflict with the background operation, so that the back end of GTK cannot be initialized and an error will be caused
the solution is to delete all the operations related to the interface and window, and the program can run well!
Error running tomcat: Can’t find catalina.jar
When idea deploys a web project, an error occurs: error running Tomcat: can’t find Catalina. Jar
Solution: the path to configure Tomcat is wrong
just change it to the installation path of Tomcat
Problem: there was an error writing the serialized IO stream today
… eofexception:
exception in thread “main” java.io.streamcorruptedexception: invalid stream header: 7b312c22
take a look at my code
After analysis, the problem has been solved:
Look at the correct code:
The code didn’t change, just changed the order inside and solved it successfully. The specific causes are described in the figure