Fatal error: Uncaught Error: Interface "League\OAuth2\Server\CodeChallengeVerifiers\CodeChallengeVerifierInterface" not found in C:\Servers\htdocs\inventory.fitzalan.co.uk\vendor\league\oauth2-server\src\CodeChallengeVerifiers\PlainVerifier.php:12 Stack trace: #0 {main} thrown in C:\Servers\htdocs\inventory.fitzalan.co.uk\vendor\league\oauth2-server\src\CodeChallengeVerifiers\PlainVerifier.php on line 12