The most direct way to resolve this is to manually import the official Webmin GPG key to your system's keyring. Run the following command in your terminal:
You are performing a and haven't added the key yet. The most direct way to resolve this is
wget -q -O - https://download.webmin.com/jcameron-key.asc | sudo apt-key add - Use code with caution. The most direct way to resolve this is
The or was replaced by the Webmin developers. The most direct way to resolve this is