TypeError

[chinagreenelvis]

Traceback (most recent call last):
  File "D:\Programs\Python3\Scripts\shreddit-script.py", line 33, in <module>
    sys.exit(load_entry_point('shreddit==6.0.7', 'console_scripts', 'shreddit')())
  File "D:\Programs\Python3\lib\site-packages\shreddit\app.py", line 44, in main
    shredder = Shredder(default_config, args.user)
  File "D:\Programs\Python3\lib\site-packages\shreddit\shredder.py", line 34, in __init__
    self._nuke_cutoff = arrow.now().replace(hours=-self._nuke_hours)
TypeError: bad operand type for unary -: 'NoneType'