# sudo apt-get update
Err:1 https://apt.dockerproject.org/repo ubuntu-xenial InRelease
Something wicked happened resolving 'apt.dockerproject.org:https' (-5 - No address associated with hostname)
Hit:2 http://kali.mirror.garr.it/mirrors/kali kali-rolling InRelease
Get:3 http://dl.google.com/linux/chrome/deb stable InRelease [1,811 B]
Hit:4 http://downloads.metasploit.com/data...-framework/apt lucid InRelease
Hit:5 https://download.docker.com/linux/debian jessie InRelease
Ign:6 https://ookla.bintray.com/debian kali-rolling InRelease
Err:7 https://ookla.bintray.com/debian kali-rolling Release
404 Not Found [IP: 443]
Reading package lists... Done
E: The repository 'https://ookla.bintray.com/debian kali-rolling Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
# uname -a
Linux JAY-SHREE-KRISHNA 5.6.0-kali2-amd64 #1 SMP Debian 5.6.14-2kali1 (2020-06-10) x86_64 GNU/Linux

# cat /etc/apt/sources.list
deb http://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 [arch=amd64] https://download.docker.com/linux/debian jessie stable
# deb-src [arch=amd64] https://download.docker.com/linux/debian jessie stable

sir, i've tried everything but still i can't fix it... please help me to run this command and i've facing another problem too

# deb-src [arch=amd64] https://download.docker.com/linux/debian wheezy stable
-bash: deb-src: command not found

those problems are irritating me i am waiting for your reply sir

you can send me a mail too on [email protected]

thank you