Repository 'http://repository.spotify.com stable InRelease' is not signed

[jsone]

in my case it's solved

[astr011 · Accepted solution]

Indeed, they fixed it. But they didn't even care to come here and tell us it was fixed. Thanks for the support, Spotify! All good, people.

[elvis_d]

To fix it, you follow step 1 for Debian at https://www.spotify.com/nl/download/linux/, that is

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 931FF8E79F0876134EDDBDCCA87FF9DF48BF1C90