Warnings on Firefox, chrome - can I overlook these?

[Gid]

I have a lot of issues, all of them depending on the device I use. 

When open the url and with a new room, I will get just a black screen. Error messages are such:

Firefox warns 

"navigator.getUserMedia has been replaced by navigator.mediaDevices.getUserMedia" easyrtc.js:2514-5

And Chrome:

"createObjectURL' on 'URL': No function was found that matched the signature provided.

at Easyrtc.createObjectURL (easyrtc.js:4153)

at Easyrtc.setVideoObjectSrc (easyrtc.js:4619)

at onUserMediaSuccess (easyrtc.js:4873)

On the server Node console log after an attempt from an Android tablet:

Connection Warning: Attempt to request non-existent room name: '123456'

    at Object.connectionObj.room (/nodejs/node_modules/easyrtc/lib/easyrtc_public_obj.js:2206:26)

    at EventEmitter.eventListener.onRoomLeave (/nodejs/node_modules/easyrtc/lib/easyrtc_default_event_listeners.js:1558:19)

    at emitThree (events.js:136:13)

    at EventEmitter.emit (events.js:217:7)

    at async.each.roomData (/nodejs/node_modules/easyrtc/lib/easyrtc_default_event_listeners.js:1296:30)

    at /nodejs/node_modules/easyrtc/node_modules/async/lib/async.js:111:13

    at Array.forEach (<anonymous>)

    at _each (/nodejs/node_modules/easyrtc/node_modules/async/lib/async.js:32:24)

    at Object.async.each (/nodejs/node_modules/easyrtc/node_modules/async/lib/async.js:110:9)

    at EventEmitter.eventListener.onMsgTypeRoomLeave (/nodejs/node_modules/easyrtc/lib/easyrtc_default_event_listeners.js:1295:11)

------------

warning - EasyRTC: Attempt to request non-existent room name: '123456'

warning - EasyRTC: [vcdemo][5NidQ7Mufy2UG72s] Couldn't leave room [123456]

warning - EasyRTC: [vcdemo][5NidQ7Mufy2UG72s] Error leaving room [123456]

-

Can I overlook some of these warnings?

I am using a specific stun and turnserver. and the latest versions of the necessary modules & easyRTC.