Traceback (most recent call last): File "/usr/lib/viewvc/lib/viewvc.py", line 4855, in main request.run_viewvc() File "/usr/lib/viewvc/lib/viewvc.py", line 408, in run_viewvc self.view_func(self) File "/usr/lib/viewvc/lib/viewvc.py", line 3486, in view_diff p1, p2, rev1, rev2, sym1, sym2 = setup_diff(request) File "/usr/lib/viewvc/lib/viewvc.py", line 3379, in setup_diff rev2 = r2 = query_dict['r2'] KeyError: 'r2'