Uncaught TypeError: Cannot convert undefined or null to object about opentok-web-samples

[VOctavian]

This works for me
if (env.name !== 'IE' || env.version > 9) { if(typeof nodes == 'undefined' || typeof nodes == 'null' ){ return []; } return Array.prototype.slice.call(nodes); }

[aullman]

I actually did some debugging and figured out how to resolve the issue so that we are creating a new XMLHttpRequest and checking instanceof (new XMLHttpRequest()).constructor but after doing that I ran into other issues with the WebSocket because pace.js are also overriding that!

I think that you're going to have to stop using pace.js or ask them to fix the issue and tell them not to override globals. Specifically window.XMLHttpRequest and window.WebSocket.

[richardsondx]

@VOctavian Thanks! but the problem is coming from Opentok.js and they are expecting us to call the endpoint directly from their server... This need to be fixed in the code.

+1

[shakalya195]

Please help. I am having the same issue. and editing opentok.js file does not work for me.

[shakalya195]

I found it conflicting with my angular 6 project.
with the JS file
"vendor/pace/pace.min.js",
which is used for automatic page load progress bar.
Don't know whats the problem is but removing this helps me running my Opentok.js.

[aullman]

Thanks for the heads up about pace.min.js this made me able to reproduce the issue.

It turns out the issue is that pace.js is overriding the global XMLHttpRequest object here.

We should still be able to work around this issue. It's really bad practice of pace.js though to override globals like that. I have filed a bug for this internally though and we'll work on a fix.