Error on Buydialog Buy

[simpsus]

Traceback (most recent call last):
  File "/home/bastian/workspace/avernus/avernus/gui/portfolio/buy_dialog.py", line 140, in on_response
    asset=ass)
  File "<string>", line 4, in __init__
  File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/state.py", line 98, in initialize_instance
    return manager.original_init(*mixed[1:], **kwargs)
  File "/home/bastian/workspace/avernus/avernus/objects/position.py", line 109, in __init__
    Position.__init__(self, **kwargs)
  File "<string>", line 6, in __init__
  File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/ext/declarative.py", line 1566, in _declarative_constructor
    (k, cls_.__name__))
TypeError: 'price' is an invalid keyword argument for PortfolioPosition

Attempting a restart, the application does not start anymore:

Traceback (most recent call last):
  File "/home/bastian/workspace/avernus/avernus/main.py", line 123, in main
    main_window = MainWindow()
  File "/home/bastian/workspace/avernus/avernus/gui/mainwindow.py", line 63, in __init__
    sb = sidebar.Sidebar()
  File "/home/bastian/workspace/avernus/avernus/gui/sidebar.py", line 29, in __init__
    self._load_items()
  File "/home/bastian/workspace/avernus/avernus/gui/sidebar.py", line 36, in _load_items
    self.insert_portfolio(all_pf)
  File "/home/bastian/workspace/avernus/avernus/gui/sidebar.py", line 95, in insert_portfolio
    gui_utils.get_currency_format_from_float(item.get_current_value()),
  File "/home/bastian/workspace/avernus/avernus/objects/container.py", line 215, in get_current_value
    value += pos.current_value
  File "/home/bastian/workspace/avernus/avernus/objects/position.py", line 79, in current_value
    return self.quantity * self.asset.price
AttributeError: 'NoneType' object has no attribute 'price'

[simpsus (bastian-kennel)]

Just treid it on a brand new database, same result