Server crashes when trading with leatherworker

Hey, i run into another problem… i have 2 error logs, hope they help.

Everytime if someone tries to trade with a leatherworker in a village the server crashes and i need to restart it.

1: http://pastebin.com/RwW2TH1P
2: http://pastebin.com/22AuBSU1

EDIT:
According to the error logs the Leatherworker Career is just missing, but the world generator creates them anyway, this leads to a server crash when trading i think.

best regards
Flo

bump, should i post this as issue on Github? :slight_smile:
I tried to summon a leatherworker per command but you get a Butcher instead.

Yes it definitely should be posted as an issue. Most likely just needs to be merged.