Last modified: 2014-03-24 18:45:49 UTC
Go to empty Flow board, and either click the pencil to edit the header or enter a first post. Then click [Preview]. You get the pink errorbox. The JS console has {"error":{"code":"invalid-title","info":"Page does not exist"}} It's probably happening because we don't ensureFlowRevision() on preview, but maybe that's not the best solution.
It used to be create failed as well, that was bug 58018. See bug 58018 comment 6
Change 118586 had a related patch set uploaded by Bsitu: "An unexpected error occurred" on first preview of Flow board https://gerrit.wikimedia.org/r/118586
Change 119118 had a related patch set uploaded by EBernhardson: Remove title must exist requirement https://gerrit.wikimedia.org/r/119118
Change 118586 abandoned by Bsitu: "An unexpected error occurred" on first preview of Flow board https://gerrit.wikimedia.org/r/118586
Change 119118 merged by jenkins-bot: Remove title must exist requirement https://gerrit.wikimedia.org/r/119118