Fatal error: Uncaught Error: Class "Illuminate\Database\Grammar" not found in D:\Apache24\www\qilu_sap\back-end\vendor\laravel\framework\src\Illuminate\Database\Query\Grammars\Grammar.php:12 Stack trace: #0 {main} thrown in D:\Apache24\www\qilu_sap\back-end\vendor\laravel\framework\src\Illuminate\Database\Query\Grammars\Grammar.php on line 12