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