You can only connect via ssh command and not web shell

[VoidxHoshi]

It's very strange, I can only connect by typing the ssh command, if I open the web url, there is only a screen that looks like it's stuck. However, after I successfully connect via local ssh, the stuck page opened on the web url becomes normal and I can enter commands through the page normally. I don't know much about tmate Is this a bug? Or is it because I don't know the exact procedure of tmate?