Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, null given in /var/sites/dealerrevs.com/tools/db-connect.php:72 Stack trace: #0 /var/sites/dealerrevs.com/tools/db-connect.php(72): mysqli_num_rows() #1 /var/sites/dealerrevs.com/brief 1.php(47): mysql_num_rows() #2 /var/sites/dealerrevs.com/dealer-inventory/index.php(270): require('...') #3 {main} thrown in /var/sites/dealerrevs.com/tools/db-connect.php on line 72