When update from 1.3.11
I get:
Exception:Traceback (most recent call last):File "/home/pi/oprint/local/lib/python2.7/site-packages/pip/_internal/cli/base_command.py", line 176, in mainstatus = self.run(options, args)File "/home/pi/oprint/local/lib/python2.7/site-packages/pip/_internal/commands/install.py", line 346, in runsession=session, autobuilding=TrueFile "/home/pi/oprint/local/lib/python2.7/site-packages/pip/_internal/wheel.py", line 886, in buildassert have_directory_for_buildAssertionError
What can I do?