Removing leftover data doesn't work

[K0-RR]

• I have read the README.md document
• I am using the latest version of Warehouse
• I am using the Flatpak package of Warehouse
• I have not found any other opened issues on the same topic

gio: file:///home/k0rr/.var/app/eu.betterbird.Betterbird: Trash portal failed on /home/k0rr/.var/app/eu.betterbird.Betterbird

[ACR-Jeff]

I'm having a similar issue, Removing left over data doesn't work for me, I've even made sure through Flatseal that I've given warehouse permissions for the directory ~/.var/app Still results in failure.

This is what error is present on my end when trying to delete leftover data
gio: file:///home/acr-void/.var/app/org.keepassxc.KeePassXC: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.portal.Desktop was not provided by any .service files

[ACR-Jeff]

Ok solved my problem. If you're having the same issue as I am, You may need to have both xdg-desktop-portal and xdg-desktop-portal-gtk installed in your system (Not flatpak).
Thanks to this comment,
flatpak/flatpak#2446 (comment)