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Fatal error: Uncaught TypeError: mysqli_fetch_array(): Argument #1 ($result) must be of type mysqli_result, bool given in E:\phpstudy_pro\mobile\php\type.php:215 Stack trace: #0 E:\phpstudy_pro\mobile\php\type.php(215): mysqli_fetch_array() #1 {main} thrown in E:\phpstudy_pro\mobile\php\type.php on line 215