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Fatal error: Uncaught mysqli_sql_exception: Unknown database 'livraria' in C:\xampp8\htdocs\mvc\model\banco.php:13 Stack trace: #0 C:\xampp8\htdocs\mvc\model\banco.php(13): mysqli->__construct('localhost', 'root', '', 'livraria') #1 C:\xampp8\htdocs\mvc\model\banco.php(9): Banco->conexao() #2 C:\xampp8\htdocs\mvc\controller\ControllerDeletar.php(7): Banco->__construct() #3 C:\xampp8\htdocs\mvc\controller\ControllerDeletar.php(15): deleta->__construct(NULL) #4 {main} thrown in C:\xampp8\htdocs\mvc\model\banco.php on line 13