Sorry, this version is not available. Why?

[neralex]

Hey!

Since some days your jessie debian package-list returns an error:

Failed to fetch http://mozilla.debian.net/dists/jessie-backports/Release 
  Unable to find expected entry 'firefox-release/binary-amd64/Packages' 
in Release file (Wrong sources.list entry or malformed file)



Your website returns this:

https://mozilla.debian.net/

« I am running Debian [stable (Jessie)] and I want to install [Firefox] 
version [release] »

Sorry, this version is not available.

Thanks in advance
Neralex