Fatal error: Uncaught Error: Class 'Google\Model' not found in C:\Apache24\htdocs\vendor\google\apiclient-services\src\CloudSecurityToken\GoogleIdentityStsV1ExchangeOauthTokenRequest.php:20 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor\google\apiclient-services\src\CloudSecurityToken\GoogleIdentityStsV1ExchangeOauthTokenRequest.php on line 20