我在Google AnalyticsAPI php中遇到问题：
Fatal error: Uncaught exception 'Exception' with message 'GAPI: Failed to authenticate user.
Error: ""' in /home/content/30/10731230/html/google_analytics/ga/gapi.class.php:418
Stack trace: #0 /home/content/30/10731230/html/google_analytics/ga/gapi.class.php(62): gapi->authenticateUser('user', 'pass')
#1 /home/content/30/10731230/html/google_analytics/index.php(13): gapi->__construct('user', 'pass')
#2 {main} thrown in /home/content/30/10731230/html/google_analytics/ga/gapi.class.php on line 418