X11 connection rejected because of wrong authentication in Mininet

I am getting this message whenever I run xterm from within mininet:

mininet> xterm h1mininet> X11 connection rejected because of wrong authentication.

However, if I run it as:

mininet@mininet-vm:~$ xterm

It shows the window as normal.

I only experience this issue with Mininet running on virtual box with ubuntu 20.04.02.

With other ubuntu version (14.04.06), xterm works fine.

Any help on this would be appreciated..