Installed postman from the ubuntu software centre under a fresh install and the app will not open.
This is the information from snap list
postman 7.13.0 97 stable postman-inc✓ -
I've tried the fix suggest here, however that didn't work.
Madness, that this app has been chosen as the banner for software centre and doesn't work out-the-box on LTS version!
This guide will install non-snap version
Then postman should be available in app menu.
ref: https://www.bluematador.com/blog/postman-how-to-install-on-ubuntu-1604
NOTE: this has been fixed with ubuntu 20.04 lts and postman works out-the-box