(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?