CMS CMS Page not working at all HTTP Error 500

[محروم.كوم]

CMS page was working 1 day ago, but today it start showing Server error.

Target URL

Site Tab URL content.php

HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request.

I contact my host, i was told that i have to contact vbulletin because it an error from their server.

Please how do i fix this issue?
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