Hello everyone,

I tried to update my Kali and now I receive the following error:

Code:
OK:1 http://repository.spotify.com stable InRelease
OK:2 https://packages.cloud.google.com/apt kubernetes-xenial InRelease
Ign:3 http://ftp.halifax.rwth-aachen.de/kali kali-rolling InRelease
Fehl:4 http://ftp.halifax.rwth-aachen.de/kali kali-rolling Release
  404  Not Found [IP: 137.226.34.46 80]
Paketlisten werden gelesen... Fertig
E: Das Depot ?http://http.kali.org/kali kali-rolling Release? enth?lt keine Release-Datei.
N: Eine Aktualisierung von solch einem Depot kann nicht auf eine sichere Art durchgef?hrt werden, daher ist es standardm??ig deaktiviert.
N: Weitere Details zur Erzeugung von Paketdepots sowie zu deren Benutzerkonfiguration finden Sie in der Handbuchseite apt-secure(8).
This translated means, kali-rolling doesnt have a release-file. Updating of such an Depot cannot be achieved on a secure way... bla bla..

I tried several different repos and this "works" #deb https://kali.mirror.garr.it/mirrors/kali kali-rolling main non-free contrib , but I dont receive a single update.
Code:
odin@mjolnir:~|⇒  apt-update                     
OK:2 http://repository.spotify.com stable InRelease                                                    
OK:3 https://kali.mirror.garr.it/mirrors/kali kali-rolling InRelease                             
OK:1 https://packages.cloud.google.com/apt kubernetes-xenial InRelease                           
Paketlisten werden gelesen... Fertig         
Paketlisten werden gelesen... Fertig
Abh?ngigkeitsbaum wird aufgebaut.       
Statusinformationen werden eingelesen.... Fertig
Paketaktualisierung (Upgrade) wird berechnet... Fertig
0 aktualisiert, 0 neu installiert, 0 zu entfernen und 0 nicht aktualisiert.
Paketlisten werden gelesen... Fertig
Abh?ngigkeitsbaum wird aufgebaut.       
Statusinformationen werden eingelesen.... Fertig
0 aktualisiert, 0 neu installiert, 0 zu entfernen und 0 nicht aktualisiert.
Paketlisten werden gelesen... Fertig
Abh?ngigkeitsbaum wird aufgebaut.       
Statusinformationen werden eingelesen.... Fertig
All sources I tried:

Code:
#deb cdrom:[Kali GNU/Linux 2020.2rc3 Kali-last-snapshot - Official amd64 DVD Binary-1 with firmware 20200508-14:35]/ kali-rolling contrib main non-free
 #deb cdrom:[Kali GNU/Linux 2020.2rc3 _Kali-last-snapshot_ - Official amd64 DVD Binary-1 with firmware 20200508-14:35]/ kali-rolling contrib main non-free
 #deb https://kali.mirror.garr.it/mirrors/kali kali-rolling main non-free contrib
 #deb-src http://kali.mirror.garr.it/mirrors/kali kali-rolling main non-free contrib
 
 deb http://http.kali.org/kali kali-rolling main non-free contrib
 #deb https://http.kali.org/kali kali main non-free contrib
 
 
 #deb https://security.kali.org/kali-security kali/updates main contrib non-free
 #deb http://http.kali.org/kali kali-current main contrib non-free
 #deb http://security.kali.org/kali-security kali-current/updates main contrib non-free
 
 #deb-src http://http.kali.org/kali kali-current main contrib non-free
 #deb-src http://security.kali.org/kali-security kali-current/updates main contrib non-free 
 
 #deb-src https://http.kali.org/kali kali main non-free contrib
 
 
 #deb-src http://security.kali.org/kali-security kali/updates main contrib non-free 
 #deb-src http://http.kali.org/kali kali-rolling main non-free contrib
 
 # This system was installed using small removable media
 # (e.g. netinst, live or single CD). The matching "deb cdrom"
 # entries were disabled at the end of the installation process.
 # For information about how to configure apt package sources,
 # see the sources.list(5) manual.
Any Idea what happened? 2 days ago this worked without issues.