Console error: WebSocket connection to 'ws://localhost:53317/socket' failed

What version of Remix are you using?

1.3.1

Steps to Reproduce

• Generate a new remix app and npm run dev
• Add these scripts and relevant node packages (concurrently, sass) "dev": "concurrently \"npm run dev:generate-css\" \"remix dev\"", "dev:generate-css": "sass --watch ./app/scss:app/css",
• Create a folder at /app/scss
• Start the dev server, go to localhost, and open the console in Chrome’s inspector
• Whilst the app is running, create a .scss file under app/scss
• Check the console in Chrome’s inspector to see the error and broken livereolad

Expected Behavior

No errors for WebSocket connection to ‘ws://localhost:53317/socket’ failed to appear when a watched scss file is added, and working live reload

Actual Behavior

Seeing a WebSocket connection to ‘ws://localhost:53317/socket’ failed in the console, and broken livereload

(index):30 WebSocket connection to 'ws://localhost:53317/socket' failed: 
(anonymous) @ (index):30
(anonymous) @ (index):45
(index):42 Remix dev asset server web socket error:
(index):43 Event {isTrusted: true, type: 'error', target: WebSocket, currentTarget: WebSocket, eventPhase: 2, …}isTrusted: truebubbles: falsecancelBubble: falsecancelable: falsecomposed: falsecurrentTarget: WebSocketbinaryType: "blob"bufferedAmount: 0extensions: ""onclose: nullonerror: (error) => {…}onmessage: (message) => {…}onopen: nullprotocol: ""readyState: 3url: "ws://localhost:53317/socket"[[Prototype]]: WebSocketdefaultPrevented: falseeventPhase: 0path: []returnValue: truesrcElement: WebSocketbinaryType: "blob"bufferedAmount: 0extensions: ""onclose: nullonerror: (error) => {…}onmessage: (message) => {…}onopen: nullprotocol: ""readyState: 3url: "ws://localhost:53317/socket"[[Prototype]]: WebSockettarget: WebSocketbinaryType: "blob"bufferedAmount: 0extensions: ""onclose: nullonerror: (error) => {…}onmessage: (message) => {…}onopen: nullprotocol: ""readyState: 3url: "ws://localhost:53317/socket"[[Prototype]]: WebSockettimeStamp: 66.39999997615814type: "error"[[Prototype]]: Event
ws.onerror @ (index):43
error (async)
(anonymous) @ (index):41
(anonymous) @ (index):45

[abn5x]

still happening…

[tessellator]

I believe this is a duplicate of #2958.