[coderintherye]

Perhaps the dreaded 503 Internal Error ?

I'm convinced most of the people in this thread haven't tried working much with Google Sheets API at scale. Most of the time it's fine, then it will have days where 30-40% of the calls (as measured by Google Cloud console API monitoring) will throw an internal error which Google advises the option for is to "try again later". Also API calls that take up to 4 minutes (?!) to return (again as measured by their own API monitoring tools in Cloud console).

It's too bad because I otherwise really like this approach.