import error before handling

[ch4zm]

Traceback (most recent call last):
  File "/private/tmp/vp/bin/game-dump", line 8, in <module>
    sys.exit(main())
  File "/private/tmp/vp/lib/python3.7/site-packages/game_dump/command.py", line 58, in main
    v = JsonView(options)
  File "/private/tmp/vp/lib/python3.7/site-packages/game_dump/view.py", line 36, in __init__
    gd = RawGameData(self.game_id)
  File "/private/tmp/vp/lib/python3.7/site-packages/game_dump/data.py", line 33, in __init__
    except JSONDecodeError:
NameError: name 'JSONDecodeError' is not defined