var report = AdWordsApp.report('SELECT Clicks, Cost, Conversions, Impressions FROM ACCOUNT_PERFORMANCE_REPORT WHERE Device="DESKTOP" DURING LAST_MONTH');
The error message I keep getting is:
"Failed to read from AdWords. Please wait a bit and try again."
Trying again didn't help. This is breaking since the beginning of the month.
This line of code used to execute successfully for years and started breaking recently. If I remove this part: "WHERE Device="DESKTOP" it works but then I can't segment by device.