Fatal error: Uncaught Error: Class 'Google\Service\Resource' not found in C:\Apache24\htdocs\vendor\google\apiclient-services\src\FirebaseCloudMessaging\Resource\ProjectsMessages.php:31 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor\google\apiclient-services\src\FirebaseCloudMessaging\Resource\ProjectsMessages.php on line 31