Warning: Undefined variable $mysqli_connect in /users/2019/i1919004/public_html/2022/WebDB/test/insert.php on line 2

Fatal error: Uncaught Error: Value of type null is not callable in /users/2019/i1919004/public_html/2022/WebDB/test/insert.php:2 Stack trace: #0 {main} thrown in /users/2019/i1919004/public_html/2022/WebDB/test/insert.php on line 2