Thanks! I see that there is another report that covers another trivial error that I noticed about "libpng12-dev" now having a package name "libpng-dev" in all supported Ubuntu LTS versions.
https://issues.apache.org/jira/browse/GUACAMOLE-1662 And it looks like there is a PR awaiting merge that covers both: https://github.com/apache/guacamole-manual/pull/184 Is this the proper channel to make PRs for this project or is there another pathway? >
