Hello, I am a mediawiki developer. This is a bug for the wiki skin in 1.39. Use of BaseTemplate::printTrail was deprecated in MediaWiki 1.39. Use of BaseTemplate::getTrail was deprecated in MediaWiki 1.39. Use of QuickTemplate::(get/html/text/haveData) with parameter `bottomscripts` was deprecated in MediaWiki 1.39. I also recommend removing the call to `Wikimedia\AtEase\AtEase::suppressWarnings();` so that warnings are more noticeable as you upgrade MediaWiki version - it suppresses these warnings from your logs! More information on this can be found here: https://phabricator.wikimedia.org/T306942 Please me know if you would like a patch for this.
