The 1.42.0-wmf.18 version of MediaWiki is blocked[0].

The new version is currently deployed to group1[1], and can proceed no further until these issues are resolved:

* Revision endpoint: InvalidArgumentException: ParserOutput does not have a render ID - https://phabricator.wikimedia.org/T356368

* TypeError: Argument 1 passed to MediaWiki\Parser\Sanitizer::encodeAttribute() must be of the type string, null given, called in /srv/mediawiki/php-1.42.0-wmf.18/includes/xml/Xml.php on line 81 - https://phabricator.wikimedia.org/T357668

The second issue blew up after a rollback for the first issue, so we're currently in a much-less-than-optimal state.

Once these issues are resolved train can resume.

Thank you for any help!

-- Your not entirely placid train operator

[0]. https://phabricator.wikimedia.org/T354436 [1]. https://versions.toolforge.org/