I’ve raised an issue for this on the hassos github, but am also seeing if anyone has had a similar problem here.
There is no further detail after the yellow message (but do also note the red text 502 bad gateway). A single time, it said:
Cannot connect to host github-production-release-asset-2e65be.s3.amazonaws.com:443 ssl:None [Try again]
but I have tried several times (at least 15) and normally there is no follow up message.
Anyone else having any similar issues or know a solution?
Hass.os issue: https://github.com/home-assistant/hassos/issues/346