In this article, we will explain the 500 Internal Server Error and how to resolve it if you encounter it.
The internal server error is a general HTTP status code that indicates that your server is experiencing difficulties or that something has gone wrong with your website’s server. The problem may be just temporary because it doesn’t explain what it is. When the webserver finds an unintended mistake, this happens. It could be a problem with your web host or something is wrong with the program.
You can check this normally:
- Click F5 or Reload the Page.
- Check for permissions errors in your folders.
- Examine the PHP timeout.
- .htaccess coding error.
- Because of the volume of traffic on your website.
If you are currently experiencing this problem, you can use the following procedure to keep an eye on the Apache log for new errors:
- Run tail -n0 -f /var/log/apache2/error_log
- Refresh the website the error is happening on
- Exit tail with CTRL+C and review the output
The following section discusses some of the most common causes of a 500.
When this happens on a cPanel server, it’s usually due to invalid coding in the. htaccess file, which looks like this in the Apache error log:
[Wed May 13 06:31:26.262337 2020] [core:alert] [pid 2140] [client 10.3.17.46:57731] /home/sean/public_html/.htaccess: Invalid command 'SetEnv', perhaps misspelled or defined by a module not included in the server configuration
Because the server did not have the Apache module mod_env, you can avoid a fatal error by using the If Module statement in the .htaccess file:
<IfModule mod_env> SetEnv test test </IfModule>
Sever does not have enough memory to allocate to request:
[Fri May 08 00:42:01.220008 2020] [cgi:error] [pid 24686] (12)Cannot allocate memory: [client 10.3.17.46:31164] AH01223: couldn't spawn child process: /usr/local/cpanel/cgi-sys/wredirect.cgi
A 500 error may occur if a user has a limit on the number of inodes that can be used in CloudLinux. If the script is unable to generate the necessary files, it will return a more general 500 error. If you want to see the user’s quota, use the quota command.
# test root@93545571 /home/testuser/public_html]cPs# quota -su testuser
Disk quotas for user an000282 (uid 1282):
Filesystem space quota limit grace files quota limit grace
/dev/sda2 4239M 0K 0K 323k* 300k 360k none
This test user has exceeded the maximum number of files he or she can make, resulting in a 500 error from Apache due to a bad file descriptor:
[Sat Aug 01 08:26:22.459080 2020] [:error] [pid 28368:tid 47803753387776] [client xxx.xx.xxx.x:36561] Sat Aug 1 08:26:22 2020 (18854):
[Sat Aug 01 08:26:22.459189 2020] [:error] [pid 28368:tid 47803753387776] [client xxx.xx.xxx.x:36561] Fatal Error
[Sat Aug 01 08:26:22.459311 2020] [:error] [pid 28368:tid 47803753387776] [client xxx.xx.xxx.x:36561] Unable to create lock file: Bad file descriptor (9)
[Sat Aug 01 08:26:22.459354 2020] [:error] [pid 28368:tid 47803753387776] [client xxx.xx.xxx.x:36561]
[Sat Aug 01 08:26:22.460977 2020] [core:error] [pid 28368:tid 47803753387776] [client xxx.xx.xxx.x:36561] End of script output before headers: index.php
We hope that you now have a good understanding of the 500 Internal Server Error. If you continue to have problems with the protocol outlined above, please contact the bodHOST Team for constructive assistance 24/7.