Hi. I have Backoffice Manager Pro Plugin in my site and i mark republish function for users. But when i press "republish now" button in listings control page i get error message like 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 [email protected] 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.

Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.
"
What is this ?
And how i can fix this error

Thank you very much...

In your error description you have written "Please contact the server administrator".
What they told you?

It will be very same problem like here:
http://forums.mb-themes.com/zara-osclass-responsive-theme/server-requirements-for-print-ad-plugin/

Ok thank you very much i will contact the server administrator to resolve this problem. Thank you one more time