Non-ideal tb-starter error message, which will be improved in Whonix 14. It means that Tor Browser exited with code 134.
Try to manually start Tor Browser.
cd ~/.tb/tor-browser
./start-tor-browser.desktop
echo $?
(In essence, tb-starter does no more than that.)
That should show a better error message that may help us here.
And forget about hardend Tor Browser, because it’s not really hardened, see:
Hardened Tor Browser Bundle not as hardened you think. Soon becoming extinct