RSS feed does not work

[KS-20]

Both livemark and thunderbird don't work, but when i forked the website repository it worked perfectly under https://ks-20.github.io/ . thunderbird checks the rss feed using w3c feed validation service and it returns this error:

Server returned [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:727)

I tried to use two SSL/TLS validation services (1 and 2 ) both complain about the "certificate chain" so i estimate that is the issue (although this stuff really isn't my field of expertise) , one of them says you should contact your ssl provider.

edit: fixed link to w3 feed validator

[ammen99]

Is this still the case? I think there have been some changes.

[KS-20]

unfortunately yes (under both livemark and thunderbird)

I tried both SSL checkers and don't see any problems (including chain certificate issues), w3c feed validator now shows the feed file but makes some complains, the most serious one seem to be broken url "/2020/04/10/Writing-Plugins.html" . probably site.url needs to be defined in _config.yml (The reason it works for me is probably that github pages defines those variables).

I also opened a pull request for using jekyll to generate the feed which might make things simpler.