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