Trying to install wp76 toolchain on WSL fails

I am trying to install swi-wp76_3.3.0 on WSL(Windows Subsystem Linux Ubuntu 18.04.2 LTS).

I am following steps defined at https://source.sierrawireless.com/resources/airprime/software/legato_application_development_kit_linux/.
On running : leaf setup wp76latest -p swi-wp76_3.3.0, I continuously get following error:
"
Error during installation: Error during install step for wp76-toolchain_SWI9X07Y_02.25.02.01-linux64 (command returned 1)
https://source.sierrawireless.com/devices/wp-series/wp7607/ERROR:
Profile provisioning interrupted
CAUSED BY:
Error during install step for wp76-toolchain_SWI9X07Y_02.25.02.01-linux64 (command returned 1)
HINT:
try leaf profile sync to resume
Command exited with 2
ERROR:
Sub command failed: ‘leaf profile sync wp76latest’
"

Tried several times with and without sudo, but always get same result. I am quite keen to get Legato setup on this configuration. Any help/ suggestion will be very useful.

Having the same issue. Using leaf or manuel. WP85 toolchain installs fine.
Did you find a solution @sksinha ?

Some more info on this issue.

toolchain install fail:
image

Leaf sync fail: