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Fatal error: Uncaught ArgumentCountError: mysqli_error() expects exactly 1 argument, 0 given in /usr/share/nginx/html/kanrigamen/connect_sql.php:3 Stack trace: #0 /usr/share/nginx/html/kanrigamen/connect_sql.php(3): mysqli_error() #1 /usr/share/nginx/html/buy/list.php(8): require('...') #2 {main} thrown in /usr/share/nginx/html/kanrigamen/connect_sql.php on line 3