Fatal error: Uncaught Error: Class 'YoastSEO_Vendor\League\OAuth2\Client\OptionProvider\PostAuthOptionProvider' not found in C:\wamp64\www\wordpress\wp-content\plugins\wordpress-seo\vendor_prefixed\league\oauth2-client\src\OptionProvider\HttpBasicAuthOptionProvider.php:22 Stack trace: #0 {main} thrown in C:\wamp64\www\wordpress\wp-content\plugins\wordpress-seo\vendor_prefixed\league\oauth2-client\src\OptionProvider\HttpBasicAuthOptionProvider.php on line 22