localtunnel 5000 [Error] Unable to register tunnel. Perhaps service is down?

[Mohit Singh]

Hi,

 I am trying to use this tool to expose one of the port in public settings

But I am getting this error

localtunnel 5000

   [Error] Unable to register tunnel. Perhaps service is down?

I am behind the proxy given as 

http://proxy.foo.bar.com:port

How do I resolve this issue

Thanks