Java also seems to be a couple of builds behind, and I wasn’t able to update it with either the AMP default button nor with sudo apt update. It’s preventing the server from starting–how can I update these?
For Java, after installing a new package, you need to stop/start a MC instance. (Java runtimes aren’t handled by AMP when you’re not using Docker)
AMP has a shortcut script if you run getamp installJava as root; it’ll install all the LTS runtime versions