Can't receive message streams in WebGL build

[Shady9595]

I cant seem to receive Message Streams in the WebGL build but if I am running my application in the editor I receive the message streams normally.
In the editor the mRtcEngine.OnStreamMessage method is being invoked, but in the build the mRtcEngine.OnStreamMessageError is always invoked. I read in the documentation that this occurs when the messages isn't received in 5 seconds but this gets invoked in the same second as the message stream is sent.
The error codes I am receiving in the callback are nowhere to be found and they keep on changing.

I have checked multiple things on the sender side as well my byte[] array does not exceed the stream limit provided by Agora and I am getting the success callback as it returns 0 upon sending messages. Moreover it is being received if I am joining a channel from the editor but in the build it is always received in the OnStreamMessageError.

The multiple error codes I have received so far are:
39655952
36842512
46433776

[icywind]

This is indeed a bug - misaligned callback mappings during the base SDK update. Please grab the latest code from dev/refactor8.

If you just need that one thing work, consider inserting this line in AgoraWebGLSDK.jslib:

[Shady9595]

After applying this fix I am getting an error upon receiving a message

[Shady9595]

Still not working

[icywind]

Try refactor8 release. It has been verified working there.

[muneebyasir]

I am still facing this issue that recieving Messages in Unity Editor but on the WebGL build I have hosted on itch.io.
I am using Unity 6.0 ( 6000.0.60f1) LTS
Getting this error:
v5.framework.js.br:9 Uncaught (in promise) ReferenceError: Runtime is not defined
at UnityHooks.InvokeStreamMessageCallback (v5.framework.js.br:9:316962)
at ClientManager.handleStreamMessage (clientmanager.js:274:16)
at XN.emit (AgoraRTC_N.js:5:119250)
at Iv. (AgoraRTC_N.js:6:475769)
at Iv.emit (AgoraRTC_N.js:5:119250)
at gv. (AgoraRTC_N.js:5:327484)
at gv.emit (AgoraRTC_N.js:5:119250)
at WebSocket.a (AgoraRTC_N.js:5:320460)