For the past 2 years, I have used
https://script.google.com/macros/s/A...D&sheet=Sheet1 to read Google Sheets data vis PHP.
As of Thursday, June 14, that method as returned an error "Authorization is required to perform that action.".
What do we do now? I contacted the GitHub author within a half-hour.
This was a simple, useful method.
There might be other methods, more complex?