This article will guide you on steps to resolve drupal #ajax error 500 which occurs due to various reasons like insufficient memory, bad permissions, and broken modules.
An internal server error happens when the server encounters a situation it doesn't know how to handle.
Any syntax #errors will cause a 500 Internal Server Error message to be displayed instead of your #website.
To confirm whether a misconfiguration . htaccess is the cause of the 500 Internal Server error, either remove or rename the . htaccess file temporarily and then try to reload the page.
To Resolve 500 Internal Server #Error in #Drupal:
1. Debugging the Issue. The first step is to make sense of the situation and try to make sense of the error.
2. Check if the Admin Works.
3. Revert Recent Changes.
4. Audit Your Plugins/Extensions/Modules.
5. Check File Permissions.
6. Increase PHP Memory Limit.