in my mediawiki installation if i try to update or create a page that contain tables with header (!) https://www.mediawiki.org/wiki/Help:Tables#Table_headers i receive this error:
403 Forbidden You do not have permission to access this document.
The Web Server
in the past i have created and modified many page with table header without any problem.
i think that this problem came from a mediawiki update or hosting provider software update.
any solution?