Fatal error: Uncaught Error: Interface "Symfony\Component\String\Slugger\SluggerInterface" not found in C:\Apache24_x64\htdocs\ex-vak\vendor\symfony\string\Slugger\AsciiSlugger.php:21 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\ex-vak\vendor\symfony\string\Slugger\AsciiSlugger.php on line 21