Even though I have email error notifications turned on, nothing happened :-(
And because every day I divide one large file (google sheet) into small ones and then automatically assemble it again from small ones, so if an error occurs in one of the 6 steps, the data is irretrievably lost, and this happened today, after 16 days of daily operation :-( !
One file was created empty, and the other with only half the data :-(
Such unreliability, and without a notification that the file failed to create, is unacceptable for paid software :-( !