Fatal error: Uncaught Error: Class "Illuminate\Database\Query\Grammars\Grammar" not found in C:\xampp\htdocs\ot1\vendor\laravel\framework\src\Illuminate\Database\Query\Grammars\MySqlGrammar.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ot1\vendor\laravel\framework\src\Illuminate\Database\Query\Grammars\MySqlGrammar.php on line 8