The test system is currently loading lib/WikibaseLib.php (which means loading this file is probably documented somewhere and other wikibases may also have this line.
It was removed in https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Wikibase/+/618342
It should perhaps we readded as an empty file just to avoid the issue.
Warning: require_once(/var/www/html/extensions/Wikibase/lib/WikibaseLib.php): failed to open stream: No such file or directory in /var/www/html/LocalSettings.php on line 52 Fatal error: require_once(): Failed opening required '/var/www/html/extensions/Wikibase/lib/WikibaseLib.php' (include_path='/var/www/html/vendor/pear/console_getopt:/var/www/html/vendor/pear/mail:/var/www/html/vendor/pear/mail_mime:/var/www/html/vendor/pear/net_smtp:/var/www/html/vendor/pear/net_socket:/var/www/html/vendor/pear/pear-core-minimal/src:/var/www/html/vendor/pear/pear_exception:.:/usr/local/lib/php') in /var/www/html/LocalSettings.php on line 52
There was a change to update the fed props systems LS.php files https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Wikibase/+/616071
And that is already merged in master but has not yet been deployed to any of the test systems
- Restore the WikibaseLib.php file for the people that use it (could be filed as a separate task?)
- Update the fed props test systems to use the merged in master config