When I try to update via update 50 i get this message.
pip can't proceed with requirement 'lxml>=3.0 (from WeasyPrint->render50==2.0.0)' due to a pre-existing build directory. location: /tmp/pip_build_root/lxml This is likely due to a previous installation that failed. pip is being responsible and not assuming it can delete this. Please delete it and try again.
Storing debug log for failure in /home/ubuntu/.pip/pip.log Something went wrong! The output has been logged in /home/ubuntu/lib/ide50.log