Fatal error: Uncaught Error: Interface "Psy\Completion\Source\SourceInterface" not found in C:\xampp\htdocs\adminolt\vendor\psy\psysh\src\Completion\Source\MatcherAdapterSource.php:40 Stack trace: #0 {main} thrown in C:\xampp\htdocs\adminolt\vendor\psy\psysh\src\Completion\Source\MatcherAdapterSource.php on line 40