Who can help me with this Internal Server Error?

hi guys ,who can help me with this?
Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at webmaster@000webhost.io to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

last action was that i installed a plugin in wordpress caled w3 total cache…pls help

In most cases error 500 happens due to error in your script. Enable PHP error reporting to see exact problem. Follow this tutorial and let me know exact error message