AppStream Report for PureOS - Issues for nifti2dicom-data in byzantium/main

Errors

gui-app-without-icon
The component is a GUI application (application which has a .desktop file for the XDG menu and Type=Application), but we could not find a matching icon for this application.

asv-cid-desktopapp-is-not-rdns
:3 - qnifti2dicom.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.
missing-launchable-desktop-file
The MetaInfo file references a .desktop file with ID 'qnifti2dicom.desktop' in its launchable tag, but the file was not found in the same source tree. In order to be able to launch the software once it was installed, please place the MetaInfo file and its .desktop files in the same package.

asv-screenshot-media-url-not-secure
:25 - http://www.bio.dist.unige.it/images/n2d/mainpage.png
Consider using a secure (HTTPS) URL to reference this screenshot image or video.
asv-screenshot-media-url-not-secure
:29 - http://www.bio.dist.unige.it/images/n2d/mainpage_vol_dcm.png
Consider using a secure (HTTPS) URL to reference this screenshot image or video.
asv-screenshot-media-url-not-secure
:33 - http://www.bio.dist.unige.it/images/n2d/editingdcm.png
Consider using a secure (HTTPS) URL to reference this screenshot image or video.
asv-screenshot-media-url-not-secure
:37 - http://www.bio.dist.unige.it/images/n2d/finalpage.png
Consider using a secure (HTTPS) URL to reference this screenshot image or video.
asv-desktop-app-launchable-omitted
-
This `desktop-application` component has no `desktop-id` launchable tag, however it contains all the necessary information to display the application. The omission of the launchable entry means that this application can not be launched directly from installers or software centers. If this is intended, this information can be ignored, otherwise it is strongly recommended to add a launchable tag as well.
asv-content-rating-missing
-
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/