Feed error: HTTP headers and certificate verification

[ghost]

Feed

https://rss.teknik.io/Blog

Log

load feed configuration from ['/Users/soulitude/.rss2email/rss2email.cfg']
loaded configuration from ['/Users/soulitude/.rss2email/rss2email.cfg']
load feed data from /Users/soulitude/.rss2email/rss2email.json
fetch Teknik (https://rss.teknik.io/Blog -> dmz76@teknik.io)
process Teknik (https://rss.teknik.io/Blog -> dmz76@teknik.io)
HTTP status 200
could not get HTTP headers: Teknik (https://rss.teknik.io/Blog -> dmz76@teknik.io)
unrecognized version: Teknik (https://rss.teknik.io/Blog -> dmz76@teknik.io)
<urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:748)>: Teknik (https://rss.teknik.io/Blog -> dmz76@teknik.io)
save feed configuration to /Users/soulitude/.rss2email/rss2email.cfg
save feed data to /Users/soulitude/.rss2email/rss2email.json

Version

rss2email 3.9
python 3.6.2 (default, Jul 17 2017, 16:44:47) 
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)]
feedparser 5.2.1
html2text (2016, 9, 19)

Works with the original Py2 version.

[ghost]

Had to run install_certifi.py.