Fatal error: Uncaught Error: Class 'YoastSEO_Vendor\League\OAuth2\Client\Provider\AbstractProvider' not found in C:\wamp64\www\wordpress\wp-content\upgrade-temp-backup\plugins\wordpress-seo\vendor_prefixed\league\oauth2-client\src\Provider\GenericProvider.php:26 Stack trace: #0 {main} thrown in C:\wamp64\www\wordpress\wp-content\upgrade-temp-backup\plugins\wordpress-seo\vendor_prefixed\league\oauth2-client\src\Provider\GenericProvider.php on line 26