Problem in connect to dude server with port forwarding

RouterOS The Dude
1

hi
I have installed and enabled dude server on x86 mikrotik server, but when I try to connect dude server with port forwarding, the error “cannot resolve address” has displayed.
i think dude client has problem with port forwarding, while connecting with port forwarding to this server by winbox is possible.
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2

Idea:
dude-port.png

3

My problem has fixed. thank you so much.