Stuck notifications

AWX 15.0.1. Hi. I have a notification template that I just can’t get rid of. Every time I try to delete it I get "ERROR: Delete not allowed while there are pending notifications ".

awx notifications list from the cli lists 199 notifications that are stuck. First one has “created”: “2019-06-03T16:06:27.300790Z”.

Don’t know why AWX can’t either resend or purge the old notifs… is there a table that I can just delete from, or are there foreign keys that might get broken?