Might be related to the blowfish deprecation--it is

If its caused by blowfish, then its weird because it is at the latest version, and running the token factory script alone is working fine, it throws as well the info that blowfish is deprecated but I'm receiving a valid token.

what version of pyjwt are you using? if possible downgrade to 1.7.1 per issue #6 on github.

the issue is inside of py-pure-client