Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, false given in /home/soham14704.helioho.st/httpdocs/user_email_check.php:11 Stack trace: #0 /home/soham14704.helioho.st/httpdocs/user_email_check.php(11): mysqli_num_rows() #1 {main} thrown in /home/soham14704.helioho.st/httpdocs/user_email_check.php on line 11