I've been banging my head against a wall for a while and would appreciate any pointers...

• I have a writeable canned query to update rows in the db.
• I'm using the github-oauth plugin for authentication.
• I have allow set on the query to accept my GitHub id and a GH organisation.
• Authentication seems to work as expected both locally and on Cloudrun -- viewing /-/actor gives the same result in both environments
• I can access the 'padlocked' canned query in both environments.

Everything seems to be the same, but the canned query works perfectly when run locally, and fails when I try it on Cloudrun. I'm redirected back to the canned query page and the db is not changed. There's nothing in the Cloudstor logs to indicate an error.

Any clues as to where I should be looking for the problem?