Possible fix

public/script.js

@@ -1,6 +1,6 @@
 import moment from "https://jspm.dev/moment"
 import { io } from "https://cdn.socket.io/4.3.2/socket.io.esm.min.js"
-const socket = io(":3000")
+const socket = io()
 const messageButton = document.querySelector("#send")
 const menuButton = document.querySelector("#menu")
 const nameButton = document.querySelector("#name")

server.js

@@ -6,11 +6,13 @@ const io = require("socket.io")(server, {
         origin: [
             "http://127.0.0.1:3000",
             "http://192.168.1.226:3000",
-            "http://192.168.1.226:3000",
+            "https://chat.henryhiles.com",
         ],
     },
 })
 
+io.serveClient(false)
+
 app.set("views", "./views")
 app.set("view engine", "ejs")
 app.use(express.static("public"))