Said the same, and no i didn’t removed it, when i go to /etc/apt/sources.list it does not appear the one added with
echo \
"deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
The main issue is what happens when capturing linux version with $(lsb_release -cs) in linux mint, cause there is no repo for their specific distros.