For the past couple of days, the feed https://crypto.stackexchange.com/feeds hasn't been working in the Thunderbird feed reader... What is the reason?
Also the W3C validator returns problems: https://validator.w3.org/feed/check.cgi?url=https%3A%2F%2Fcrypto.stackexchange.com%2Ffeeds, but I don't know if those are the causes for my Thunderbird problem (I never tried the validator before).
