Fatal error: Uncaught Error: Class "Illuminate\Database\Query\Grammars\Grammar" not found in /var/www/html/app/vendor/laravel/framework/src/Illuminate/Database/Query/Grammars/MySqlGrammar.php:9 Stack trace: #0 {main} thrown in /var/www/html/app/vendor/laravel/framework/src/Illuminate/Database/Query/Grammars/MySqlGrammar.php on line 9