when installing astroprint cloud plugin from pi 3 got the error:
Installing plugin from uploaded archive…
/home/pi/oprint/bin/python -m pip install /tmp/tmpIKMbZL.zip
Processing /tmp/tmpIKMbZL.zip
Requirement already satisfied: OctoPrint in /home/pi/oprint/lib/python2.7/site-packages/OctoPrint-1.3.4-py2.7.egg (from AstroPrint==1.0.8)
Collecting ws4py==0.3.4 (from AstroPrint==1.0.8)
Could not find a version that satisfies the requirement ws4py==0.3.4 (from AstroPrint==1.0.8) (from versions: )
No matching distribution found for ws4py==0.3.4 (from AstroPrint==1.0.8)
Could not fetch URL https://pypi.python.org/simple/ws4py/: There was a problem confirming the ssl certificate: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581) - skipping
Error!
Could not parse output from pip, see plugin_pluginmanager_console.log for generated output