Thanks Arturo, the message is gone but it still seems to be running super slow - far more than it was in all my previous experieince. I have even moved it down to gpt3 and re-run the column and after 10 minutes most of the remaining cells have turned from Queued to Retrying.
I would normally say this is an open ai api issue, but I have loaded up credit on a second account and tried it with both api keys and have the same issue.