I just installed Kali on my Raspberry PI 4 and get the following errors while running apt updates:

Ign:1 http://archive-2.kali.org/kali kali-rolling InRelease
Ign:1 http://archive-2.kali.org/kali kali-rolling InRelease
Ign:1 http://archive-2.kali.org/kali kali-rolling InRelease
Err:1 http://archive-2.kali.org/kali kali-rolling InRelease
Could not resolve 'archive-2.kali.org'
Ign:2 http://http.re4son-kernel.com/re4son kali-pi InRelease
Ign:2 http://http.re4son-kernel.com/re4son kali-pi InRelease
Ign:2 http://http.re4son-kernel.com/re4son kali-pi InRelease
Err:2 http://http.re4son-kernel.com/re4son kali-pi InRelease
Could not connect to http.re4son-kernel.com:80 (52.95.128.189). - connect (111: Connection refused)
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://archive-2.kali.org/kali/dists...ling/InRelease Could not resolve 'archive-2.kali.org'
W: Failed to fetch http://http.re4son-kernel.com/re4son...i-pi/InRelease Could not connect to http.re4son-kernel.com:80 (52.95.128.189). - connect (111: Connection refused)
W: Some index files failed to download. They have been ignored, or old ones used instead.