The 1.35.0-wmf.8 version of MediaWiki is blocked[0].

The train was tentatively unblocked on Friday. Details can be read here:

* After deploy of 1.35.0-wmf.8 to group1, surge of "Cannot access the database: Unknown error" - https://phabricator.wikimedia.org/T239877

The new version can't proceed to group2 [1] until this (new) issue is resolved:

* "PHP Notice: Undefined index: key" and similar in Cite.php and ReferenceStack.php - https://phabricator.wikimedia.org/T240248

If this issues is resolved, we will attempt to roll wmf.8 forward to all wikis today, in order that wmf.10 can proceed as usual on Tuesday.

Thank you for your help with this issue!

-- Your frazzled train drudge

[0]. https://phabricator.wikimedia.org/T233856 [1]. https://tools.wmflabs.org/versions/