I installed senaite in ubuntu 18.04, an error occurred

I follow the Senaite 1.x installation manual, but when I execute PYTHONHTTPSVERIFY=0 buildout, the following error appears. How should this be solved?


Installing instance.

An internal error occurred due to a bug in either zc.buildout or in a
recipe being used:
Traceback (most recent call last):
File “/home/senaite/miniconda2/lib/python2.7/site-packages/zc/buildout/buildout.py”, line 2174, in main
getattr(buildout, command)(args)
File “/home/senaite/miniconda2/lib/python2.7/site-packages/zc/buildout/buildout.py”, line 817, in install
installed_files = self[part]._call(recipe.install)
File “/home/senaite/miniconda2/lib/python2.7/site-packages/zc/buildout/buildout.py”, line 1603, in _call
return f()
File “/home/senaite/buildout-cache/eggs/plone.recipe.zope2instance-4.2.11-py2.7.egg/plone/recipe/zope2instance/init.py”, line 91, in install
major, minor = parsed[0:2]
TypeError: ‘Version’ object has no attribute ‘getitem