Bench update stuck

[trentmu]

From clarkej

pkg_resources.DistributionNotFound: The 'urllib3<1.23,>=1.21.1'

On an update to v11 I encountered this (env) frappe@ubuntu:~/frappe-bench$ bench update Traceback (most recent call last): File "/usr/local/bin/bench", line 6, in <module> from pkg_resources import load_entry_point File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3195, in <module> @_call_aside File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3179, in _call_aside f(*args, **kwargs) File "/usr/local/lib/python2.7/dist-p…