App download issue

I am using ubuntu 18.04 on xavier nx (arm64) hardware. I am unable to install anything from snap store. The screen gets stuck at this:
https://imgur.com/LFTINt2

Log from the system is this. Please help in getting this to work.

Jun  4 13:07:45 xaviernx polkit-gnome-authentication-agent-1.desktop[9194]: PolicyKit daemon disconnected from the bus.
Jun  4 13:07:45 xaviernx polkit-gnome-authentication-agent-1.desktop[9194]: We are no longer a registered authentication agent.
Jun  4 13:07:45 xaviernx systemd[1]: polkit.service: Main process exited, code=dumped, status=11/SEGV
Jun  4 13:07:45 xaviernx systemd[1]: polkit.service: Failed with result 'core-dump'.
Jun  4 13:07:45 xaviernx snapd[5634]: daemon.go:215: polkit error: Message recipient disconnected from message bus without replying
Jun  4 13:07:45 xaviernx dbus-daemon[5648]: [system] Activating via systemd: service name='org.freedesktop.PolicyKit1' unit='polkit.service' requested by ':1.8' (uid=0 pid=5786 comm="/usr/sbin/NetworkManager --no-daemon ")
Jun  4 13:07:45 xaviernx systemd[1]: Starting Authorization Manager...
Jun  4 13:07:45 xaviernx polkitd[25056]: started daemon version 0.105 using authority implementation `local' version `0.105'
Jun  4 13:07:45 xaviernx dbus-daemon[5648]: [system] Successfully activated service 'org.freedesktop.PolicyKit1'
Jun  4 13:07:45 xaviernx systemd[1]: Started Authorization Manager.
Jun  4 13:07:45 xaviernx polkit-gnome-authentication-agent-1.desktop[9194]: PolicyKit daemon reconnected to bus.
Jun  4 13:07:45 xaviernx polkit-gnome-authentication-agent-1.desktop[9194]: Attempting to re-register as an authentication agent.
Jun  4 13:07:45 xaviernx polkit-gnome-authentication-agent-1.desktop[9194]: We are now a registered authentication agent.
Jun  4 13:08:05 xaviernx compiz[9055]: Error: Can't initialize nvrm channel