Upon submitting job 6783 (a test on a few pages I recently edited), the following was displayed at the top of the page:
ERROR 1064: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ') AND `wiki` = 'enwiki'' at line 1 SQL: SELECT * FROM `externallinks_user` WHERE `user_link_id` IN () AND `wiki` = 'enwiki';
This is possibly caused by me messing up my oauth configuration (I clicked on the run single page, got prompted to add oauth for editing from my account, canceled, and then was redirected to that oauth page every time I loaded the runpage (even for not running a single one)). To try and resolve that, I also canceled the view basic information grant on Special:OAuthManageMyGrants, which didn't fix the issue. I've since accepted the edit grant, but it hasn't prompted for the basic information one again, so perhaps that grant being revoked is what triggered this issue.