Traceback (most recent call last):
  File "/home/totycro/code/unknown-horizons/uh-src/horizons/spsession.py", line 174, in save
    self.world.save(db)
  File "/home/totycro/code/unknown-horizons/uh-src/horizons/world/__init__.py", line 565, in save
    player.save(db)
  File "/home/totycro/code/unknown-horizons/uh-src/horizons/ai/aiplayer/__init__.py", line 184, in save
    mission.save(db)
  File "/home/totycro/code/unknown-horizons/uh-src/horizons/ai/aiplayer/mission/internationaltrade.py", line 50, in save
    super(DomesticTrade, self).save(db)
NameError: global name 'DomesticTrade' is not defined