i have this problem
Warning: mysqli_query() expects parameter 1 to be mysqli, string given in E:\Oficina\xampp\htdocs\Formulario-Oficina\listartecnicas.php on line 6
and
Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, null given in E:\Oficina\xampp\htdocs\Formulario-Oficina\listartecnicas.php on line 25
this is my code enter image description here