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Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, bool given in /www/wwwroot/base.code.treexhd.me/VSCode/southrace-51th/0326/survey/index.php:4 Stack trace: #0 /www/wwwroot/base.code.treexhd.me/VSCode/southrace-51th/0326/survey/index.php(4): mysqli_query() #1 {main} thrown in /www/wwwroot/base.code.treexhd.me/VSCode/southrace-51th/0326/survey/index.php on line 4