https://developer.ubuntu.com/en/snappy/build-apps/your-first-snap/ In the last example snapscraft.yaml file icon: icon.png is listed. This has now been deprecated so the tutorial needs updating. Instead, the github docs state the following: Snap icon Providing an icon for your snap is important, even for command-line applications, if for nothing else than discoverability from management interfaces such as store fronts like webdm. To use an icon to represent the snap, just drop a PNG or SVG in setup/gui named icon.png for the former or icon.svg for the latter such that the (reduced) project tree would look like:   setup/gui/icon.png   snapcraft.yaml or   setup/gui/icon.svg   snapcraft.yaml [Impact] * The documentation is outdated and misleading. * This doc will end up in developer.ubuntu.com. [Test Case] * N/A. [Regression Potential] * None, just a documentation change.