Hints for qmmp in universe

qmmp.desktop ⚙ amd64

asv-cid-desktopapp-is-not-rdns
qmmp.appdata.xml:3 - qmmp.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-download-error
Error while downloading screenshot from 'https://screenshots.debian.net/screenshots/000/014/320/large.png': HTTP request returned status code 404 ()
This might be a temporary server issue, or the screenshot is no longer available.

asv-screenshot-media-url-not-secure
qmmp.appdata.xml:80 - http://qmmp.ylsoftware.com/images/qmmp-0.9_full_4.png
Consider using a secure (HTTPS) URL to reference this screenshot image or video.
asv-screenshot-media-url-not-secure
qmmp.appdata.xml:71 - http://qmmp.ylsoftware.com/images/qmmp-0.9_full_2.png
Consider using a secure (HTTPS) URL to reference this screenshot image or video.
asv-url-not-secure
qmmp.appdata.xml:66 - http://qmmp.ylsoftware.com/index.php
Consider using a secure (HTTPS) URL for this web link.
asv-url-not-secure
qmmp.appdata.xml:64 - http://qmmp.ylsoftware.com/index.php
Consider using a secure (HTTPS) URL for this web link.
asv-screenshot-media-url-not-secure
qmmp.appdata.xml:77 - http://qmmp.ylsoftware.com/images/qmmp-0.9_full_3.png
Consider using a secure (HTTPS) URL to reference this screenshot image or video.