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Fatal error: Uncaught Google_Service_Exception: { "error": { "code": 401, "message": "Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.", "errors": [ { "message": "Login Required.", "domain": "global", "reason": "required", "location": "Authorization", "locationType": "header" } ], "status": "UNAUTHENTICATED" } } in /www/htdocs/w008895a/google_calendar_api_live_demo/google-api-php-client-2.1.0_PHP54/src/Google/Http/REST.php:118 Stack trace: #0 /www/htdocs/w008895a/google_calendar_api_live_demo/google-api-php-client-2.1.0_PHP54/src/Google/Http/REST.php(94): Google_Http_REST::decodeHttpResponse(Object(GuzzleHttp\Psr7\Response), Object(GuzzleHttp\Psr7\Request), 'Google_Service_...') #1 /www/htdocs/w008895a/google_calendar_api_live_demo/google-api-php-client-2.1.0_PHP54/src/Google/Task/R in /www/htdocs/w008895a/google_calendar_api_live_demo/google-api-php-client-2.1.0_PHP54/src/Google/Http/REST.php on line 118