Cannot assign to read only property 'iceServers' of object

[WangYuLue]

run the test page and get the following error:

when I refresh the page ,the error was disappearing

Uncaught TypeError: Cannot assign to read only property 'iceServers' of object '#<Object>'
    at new window.RTCPeerConnection (simplewebrtc-with-adapter.bundle.js:17390)
    at new WrappedRTCPeerConnection (blob:http://127.0.0.1:8887/3fe08aa5-56d9-49fe-9dd1-83fd169ad2ef:300)
    at new PeerConnection (simplewebrtc-with-adapter.bundle.js:11894)
    at new Peer (simplewebrtc-with-adapter.bundle.js:20445)
    at WebRTC.createPeer (simplewebrtc-with-adapter.bundle.js:21320)
    at Socket.<anonymous> (simplewebrtc-with-adapter.bundle.js:21048)
    at Socket.onack (simplewebrtc-with-adapter.bundle.js:15228)
    at Socket.onpacket (simplewebrtc-with-adapter.bundle.js:15153)
    at Manager.<anonymous> (simplewebrtc-with-adapter.bundle.js:4357)
    at Manager.Emitter.emit (simplewebrtc-with-adapter.bundle.js:4495)

[fippo]

are you using adblock plus? https://github.com/webrtc/adapter/issues/831

[WangYuLue]

I understand when the mistake happen.

In Chrome i open the test page and it works well , and then when i directly duplicate tab, the mistake happen in the duplicated tab.

Instead, when i open a new tab, and then copy the URL to the new tab, it works well.

Why it is happened?

[shamun]

Removed AdBlock extension from Google chrome. Since then this error is not showing up. 2018/July 20 12:28AM.