Hi @kamag, thanks for bringing this up and sorry for the delay! Do you see your self-signed certificate listed in /etc/ssl/certs as a symbolic link on the rack machine? You may see something like below if you ran sudo update-ca-certificates:
ls -l /etc/ssl/certs
...
f081611a.0 -> region_self_signed.pem
region_self_signed.pem -> /usr/local/share/ca-certificates/region_self_signed.crt
If you see your certificate here, can you replace the second symbolic link (the one pointing to somewhere within /usr) with the actual file, then try initializing the rack again? You may need to keep the same filename, however:
sudo cp /usr/local/share/ca-certificates/region_self_signed.crt /etc/ssl/certs/region_self_signed.pem
You may be having this issue because the snap cannot read the endpoint of that symbolic link