Sudo apt update error: Failed to fetch Kali Linux repository with invalid signatures [migrated]

Sudo apt update error: Failed to fetch Kali Linux repository with invalid signatures [migrated]

I am encountering an issue with updating my Kali Linux system using the command sudo apt update. The output shows the following errors:

sudo apt update

Ign:1 http://kali.download/kali kali-rolling InRelease
0% [Waiting for headers]

My current kernel and hardware architecture are:

uname -a 
                                                          
Linux kali 5.10.0-kali9-amd64 #1 SMP Debian 5.10.46-4kali1 (2021-08-09) x86_64 GNU/Linux

My /etc/apt/sources.list file contains the following:

cat /etc/apt/sources.list

deb http://http.kali.org/kali kali-rolling main non-free contrib
deb-src http://http.kali.org/kali kali-rolling main non-free contrib

I have tried various solutions, such as removing cached files, modifying sources.list, and selecting a different server, but the issue persists. I am unable to install gnupg because I haven't run apt update yet.

I would appreciate any guidance on how to resolve this issue and successfully update my Kali Linux system.