HTTP 500 Internal Server Error
                           How to fix HTTP 500 Internal Server Error in 
WordPress?
In one of our previous articles about HTTP Status codes, we have covered in detail the 
type of errors website users might encounter. The 3-digit error status code that starts 
with ‘5’ and looks like 5XX indicates that there is no problem with the request made 
by the user agent.
But due to some other reasons, the server is not able to process the request due to 
incorrect configuration of the website or due to some issue encountered within the 
server.
What are the reasons that cause 500 Internal Server Error in WordPress?
Here are some of the most common issues due to which your WordPress website has an HTTP 500 
Internal Server Error.
corrupt .htaccess file
Exceeding PHP Memory Limit
Faulty Plugin or theme Issue
Corrupted Core Files
Check File Permissions
Unsupported PHP Version
Incorrect DNS entries
Problem with Server itself
Inode Limitation Reached
Tips to avoid 500 Internal Server Error and Quick Troubleshoot
 fix 500 Internal Server Error in WordPress