OnionShare 0.4 CLI Error Msgs

$ onionshare
Traceback (most recent call last):
  File "/usr/bin/onionshare", line 8, in <module>
    import onionshare
  File "/usr/lib/python2.7/dist-packages/onionshare/__init__.py", line 1, in <module>
    from onionshare import *
  File "/usr/lib/python2.7/dist-packages/onionshare/onionshare.py", line 14, in <module>
    from itsdangerous import constant_time_compare
ImportError: No module named itsdangerous