What is JAVA 500 Internal error?

Server permission: Very commonly, incorrect permissions on a file or folder that contains one of the scripts causes this this error. … Server timeout: If the server was busy, needed to be rebooted, or the connection was lost, the script might still report a 500 Internal Server Error.

For More Information Please Refer: https://airbrake.io/blog/http-errors/500-internal-server-error