When I run the apt command to upgrade my Ubuntu Linux 20.04 LTS desktop developer machine, I get an error or message:
Reading package lists... Done Building dependency tree Reading state information... Done **4 packages can be upgraded. Run 'apt list --upgradable' to see them.** Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following security updates require Ubuntu Pro with 'esm-apps' enabled: libgraphicsmagick-q16-3 liburiparser1 libmagickcore-6.q16-6-extra imagemagick libgegl-0.4-0 lynx-common libzmq5 python2.7-minimal libhdf5-103 libmagickwand-6.q16-6 fish-common libgegl-common libldns2 python2.7 python3-rsa lynx imagemagick-6.q16 libopenexr24 libsdl2-2.0-0 libmysofa1 libmagickcore-6.q16-6 inetutils-traceroute fish libpython2.7-minimal libgraphicsmagick++-q16-12 ldnsutils libpython2.7-stdlib imagemagick-6-common Learn more about Ubuntu Pro at https://ubuntu.com/pro The following packages will be upgraded: grub-efi-amd64-bin grub-efi-amd64-signed python3-future snapd 4 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 standard LTS security update Need to get 40.8 MB/41.1 MB of archives.
How do I fix this? Do I need buy an Ubuntu pro subscription? I thought Ubuntu was free 
If I upgrade to Ubuntu 22.04, LTS, will this error go away?
- Yo
