An Exception Has Occurred

Python Traceback

Traceback (most recent call last):
  File "/home/wpg2/viewvc-1.0.5/lib/viewvc.py", line 3766, in main
    request.run_viewvc()
  File "/home/wpg2/viewvc-1.0.5/lib/viewvc.py", line 253, in run_viewvc
    import vclib.svn
  File "/home/wpg2/viewvc-1.0.5/lib/vclib/svn/__init__.py", line 27, in ?
ImportError: No module named svn