(I'm sorry for bad English, I'm not native speaker)

I have a server. And I can log in. But my friend can't. His window freezes, but he can to click "cancel".

![enter image description here][1] [1]: https://i.sstatic.net/ZQ1i1.jpg

That's what I see in my console:

![enter image description here][2] [2]: https://i.sstatic.net/VaUMJ.png

So... What shall we do to fix it?

I have a server and my friend is unable to login, but I am able to log in. His window freezes, and all he can do is click "cancel".

![enter image description here][1] [1]: https://i.sstatic.net/ZQ1i1.jpg

That's what I see in my console:

![enter image description here][2] [2]: https://i.sstatic.net/VaUMJ.png

So... What can we do to fix it?