Fatal error: Uncaught Error: Interface 'Lcobucci\JWT\Validation\Constraint' not found in D:\php\WWW\ccf\vendor\lcobucci\jwt\src\Validation\Constraint\LooseValidAt.php:13 Stack trace: #0 {main} thrown in D:\php\WWW\ccf\vendor\lcobucci\jwt\src\Validation\Constraint\LooseValidAt.php on line 13