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Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in C:\xampp\htdocs\Haryana_procurment\pds_dfpd_chat\api\fetchFPSData.php:9 Stack trace: #0 C:\xampp\htdocs\Haryana_procurment\pds_dfpd_chat\api\fetchFPSData.php(9): mysqli_num_rows(false) #1 {main} thrown in C:\xampp\htdocs\Haryana_procurment\pds_dfpd_chat\api\fetchFPSData.php on line 9