use the npm module minified version of the js script

public/views/Room.html

@@ -88,7 +88,7 @@
 
         <script defer src="/socket.io/socket.io.js"></script>
         <script defer src="../sfu/MediasoupClient.js"></script>
-        <script defer src="https://cdn.jsdelivr.net/gh/leizongmin/js-xss@master/dist/xss.js"></script>
+        <script defer src="https://cdn.jsdelivr.net/npm/xss/dist/xss.min.js"></script>
         <script defer src="../js/LocalStorage.js"></script>
         <script defer src="../js/Rules.js"></script>
         <script defer src="../js/Helpers.js"></script>