sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5 sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32 not help
sudo apt-key adv --keyserver keyserver. ubuntu. com --recv-keys 40976EAF437D05B5 ubuntu. com --recv-keys 3B4FE6ACC0B21F32
sudo apt-key adv --keyserver keyserver.
not help