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Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /home/hybrid/public_html/testnum.php:19 Stack trace: #0 /home/hybrid/public_html/testnum.php(19): mysqli_num_rows(false) #1 {main} thrown in /home/hybrid/public_html/testnum.php on line 19