Hints for yoshimi in main

yoshimi.desktop ⚙ amd64

asv-cid-desktopapp-is-not-rdns
yoshimi.appdata.xml:4 - yoshimi.desktop
The component ID is not a reverse domain-name. Please update the ID to avoid future issues and be compatible with all AppStream implementations. You may also consider to update the name of the accompanying .desktop file to follow the latest version of the Desktop-Entry specification and use a rDNS name for it as well. In any case, do not forget to mention the new desktop-entry in a <launchable/> tag for this component to keep the application launchable from software centers and the .desktop file data associated with the metainfo data.
screenshot-save-error
Unable to store screenshot for 'https://a.fsdn.com/con/app/proj/yoshimi/screenshots/Mixer.png': Can not store source screenshot: Unrecognized image file format

asv-content-rating-missing
yoshimi.appdata.xml -
This component has no `content_rating` tag to provide age rating information. You can generate the tag data online by answering a few questions at https://hughsie.github.io/oars/