The 1.40.0-wmf.27 version of MediaWiki is blocked[0].

The new version is currently deployed to group1, but can proceed no further until this issue is resolved or triaged as irrelevant:

* Lcobucci\JWT\Signer\InvalidKeyProvided: Key cannot be empty - https://phabricator.wikimedia.org/T321160

Once these issues are resolved train can resume.

Thank you for any help resolving these issues!

-- Your humble train toilers

[0]. https://phabricator.wikimedia.org/T330205 [1]. https://versions.toolforge.org/