Error while trying to download (code: ): https://getgrav.org/blog.atom

After almost a month of running with minimal issues the Grav site now suddenly shows this in the Admin GUI.

Error while trying to download (code: ): https://getgrav.org/blog.atom

Any ideas?

Same problem...
Error while trying to download (code: ): https://getgrav.org/blog.atom

Any news?
Suddenly it has appeared on mine two web sites

Same here, My host is in Rochen
I got this:
Error while trying to download (code: ): https://getgrav.org/blog.atom

same !!! any further informations ?