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Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in /u01/home/s304870/public_html/semester-2/lessons/newcopy.php:4 Stack trace: #0 /u01/home/s304870/public_html/semester-2/lessons/newcopy.php(4): mysqli_query(NULL, 'SELECT * FROM u...') #1 {main} thrown in /u01/home/s304870/public_html/semester-2/lessons/newcopy.php on line 4