Can not read anaconda-mode server response over tramp

[Blade6570]

When I am editing file over tramp, I am not getting any auto completion. It shows Can not read anaconda-mode server response in the minibuffer. The *anaconda-mode* buffer has the following output:

anaconda_mode port 36323
Process anaconda-mode killed

*anaconda-ssh* buffer has the following message:

channel 3: open failed: connect failed: Connection refused
channel 2: open failed: connect failed: Connection refused
channel 2: open failed: connect failed: Connection refused

*anaconda-response* buffer has the following output:

# status: nil
# point: 1

I am on emacs-27, ubuntu-20.04.
Thanks