Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /rozklad.com/maps/rozQR_f_mysql.php:12 Stack trace: #0 /rozklad.com/maps/rozQR_f_mysql.php(12): mysqli_num_rows() #1 /rozklad.com/maps/rozQR.php(72): TableExistsNumRows() #2 {main} thrown in /rozklad.com/maps/rozQR_f_mysql.php on line 12