errer E: The repository 'https://download.docker.com/linux/ubuntu focal Release' does not have a Release file. code example

Example: The repository 'https://download.docker.com/linux/ubuntu focal Release' does not have a Release file

$ sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   bionic \
   stable"