what is the working /etc/apt/sources.list file for GROOVY Ubuntu ?

[mahesh]

Hello

apt-get update does not work.

root@user-E202SA:/home/user# uname -a
Linux user-E202SA 5.8.0-25-generic #26-Ubuntu SMP Thu Oct 15 10:30:38 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux


Please would you have a working /etc/apt/sources.list file, which is for ubuntu groovy amd64 ?

Regards