A 500 "Internal Service Error" HTTP Status code is a type of server error that could be returned when trying to access a page or other resource. This is a general message that means something is wrong with the server, but no further information is available.
Common causes of 500 errors include:
Coding errors in application code
Coding errors in configuration files
File permissions issues
Exceeding memory limits
Visitors and search engines will not be able to view the original page content when receiving a 500 error. For this reason, search engines may sometimes remove pages with this error code from their indexes.