Bug fix

webhook.php

@@ -107,7 +107,7 @@ function deposit(){
     die("Connection failed: " . $conn->connect_error);
   }
   $stmt = $conn->prepare("UPDATE req set quantity = quantity - ? where id = ?;");
-  $stmt->bind_param('is', $item_id, $quantity);
+  $stmt->bind_param('is', $quantity, $item_id);
   $stmt->execute();
   $conn->close();
   send_html("Deposited!");