Hints for mate-calc in community

mate-calc.desktop ⚙ aarch64

asv-cid-desktopapp-is-not-rdns
mate-calc.appdata.xml:4 - mate-calc.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.

asv-cid-contains-hyphen
mate-calc.appdata.xml:4 - mate-calc.desktop
The component ID contains a hyphen/minus. Using a hyphen is strongly discouraged, to improve interoperability with other tools such as D-Bus. A good option is to replace any hyphens with underscores (`_`).
asv-url-not-secure
mate-calc.appdata.xml:123 - http://www.mate-desktop.org
Consider using a secure (HTTPS) URL for this web link.
asv-unknown-tag
mate-calc.appdata.xml:124 - updatecontact
Found invalid tag. Non-standard tags should be prefixed with `x-`. AppStream also provides the <custom/> tag to add arbitrary custom data to metainfo files. This tag is read by AppStream libraries and may be useful instead of defining new custom toplevel or `x-`-prefixed tags if you just want to add custom data to a metainfo file.
asv-content-rating-missing
mate-calc.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/