Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in /homepages/43/d665163172/htdocs/ysubbarow/www/scientist.php:2765 Stack trace: #0 /homepages/43/d665163172/htdocs/ysubbarow/www/scientist.php(2765): mysqli_query(NULL, 'select * from m...') #1 {main} thrown in /homepages/43/d665163172/htdocs/ysubbarow/www/scientist.php on line 2765