ngrok doesn't work in some particular case

问题

I'm tunneling with ngrok to access my localhost of remote desktop. I successfully created my forwarding URL with ngrok but it doesn't seem it works well.

Let's say when I do this https://*******.ngrok.io/sentiment/楽 I get what I want.

But when I do this https://*******.ngrok.io/sentiment/楽しい I get bad request error but the url actually perfectly returns output on localhost of remote desktop.

I don't know what's just different, is there any encoding problem or something? I'm so in trouble. thanks.

来源：https://stackoverflow.com/questions/56374118/ngrok-doesnt-work-in-some-particular-case