Topic on Extension talk:DataTable2/Flow

Deprecated: Use of Revision::__construct was deprecated in MediaWiki 1.31. [Called from MediaWiki\Storage\PageUpdater::doModify in /var/www/html/includes/Storage/PageUpdater.php at line 1252] in /var/www/html/includes/debug/MWDebug.php on line 376

Deprecated: Use of NewRevisionFromEditComplete hook (used in onNewRevisionFromEditComplete) 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 376

Deprecated: Use of Revision::getContent was deprecated in MediaWiki 1.31. [Called from DataTable2::onNewRevisionFromEditComplete in /var/www/html/extensions/DataTable2/includes/DataTable2.php at line 260] in /var/www/html/includes/debug/MWDebug.php on line 376

I downloaded the version after selecting the 1.36 MW version.

I have just updated my MediaWiki to 1.37 and pushed a fix for DataTable2 so that it now works with 1.37. So you might try upgrading to 1.37.