Fatal error: Uncaught Error: Interface 'Google\Auth\FetchAuthTokenInterface' not found in /home/3kyo4/www/test-spreadsheet-output/vendor/google/auth/src/SignBlobInterface.php:23 Stack trace: #0 {main} thrown in /home/3kyo4/www/test-spreadsheet-output/vendor/google/auth/src/SignBlobInterface.php on line 23