ERROR: Double requirement given: cffi==1.14.1 from file:///usr/local/pip-packs/cffi-1.14.1-cp36-cp36m-manylinux1_x86_64.whl (already in cffi==1.11.5 from file:///usr/local/pip-packs/cffi-1.11.5-cp36-cp36m-manylinux1_x86_64.whl, name=‘cffi’)
I just registered to make a reply so that I can help those who have the same problem like me which cost me 4 hours of trial and error.
This is what you will do. (My client have CENTOS8 but it will work for you as well)
First, you need to upgrade. WHAT/.? We even haven’t successfully installed because of the error “ERROR: Double requirement given: cffi==1.14.1” always at the end!!!
Relax. There’s a prob with their installation list.
This is the very first thing you do. Type this command in the shell.
I had found a dirty workaround by grabbing an old cyberpanel-pip.zip from a server installed last week but without being 100% sure nothing else will be broken… (tried to post that but didn’t show in the thread)