Stuck on Error Code 090 on Meowbit

Hi! I was trying to upload my game to the Meowbit and it hit some error and now the Meowbit is stuck on a frowny face and error code 090. I can’t find any documentation on how to re-flash the Meowbit or how to get out of this error. Does anyone have any tips or links to docs that I can use to be able to be able to get the Meowbit out of this state?

Thanks,
Sweeky