Deprecated: Use of InternalParseBeforeSanitize hook (used in VariablesHooks::onInternalParseBeforeSanitize) was deprecated in MediaWiki 1.35. [Called from MediaWiki\HookContainer\HookContainer::run in /var/www/html/includes/HookContainer/HookContainer.php at line 137] in /var/www/html/includes/debug/MWDebug.php on line 377
Deprecated: Use of InternalParseBeforeSanitize hook (used in VariablesHooks::onInternalParseBeforeSanitize) was deprecated in MediaWiki 1.35. [Called from MediaWiki\HookContainer\HookContainer::run in /var/www/html/includes/HookContainer/HookContainer.php at line 137] in /var/www/html/includes/debug/MWDebug.php on line 377
shows for MediaWikis newer than 1.35 the cause seems to be the use of https://www.mediawiki.org/wiki/Extension:Variables see https://www.mediawiki.org/wiki/Topic:W4meplqtdllkgael