I got a similar issue with Flatpak 1.16.0 on Kali Linux (Debian derivative).
ID Branch Op Remote Download 1. [\] org.freedesktop.Platform.openh264 2.5.1 i flathub 620.4 kB / 971.4 kB ID Branch Op Remote Download 1. [✗] org.freedesktop.Platform.openh264 2.5.1 i flathub 620.4 kB / 971.4 kB ID Branch Op Remote Download 1. [✗] org.freedesktop.Platform.openh264 2.5.1 i flathub 620.4 kB / 971.4 kB ID Branch Op Remote Download 1. [✗] org.freedesktop.Platform.openh264 2.5.1 i flathub 620.4 kB / 971.4 kB 2. [✗] org.freedesktop.Platform.openh264 2.5.1beta i gnome-nightly 620.1 kB / 971.2 kB 1. [✗] org.freedesktop.Platform.openh264 2.5.1 i flathub 620.4 kB / 971.4 kB 2. [✗] org.freedesktop.Platform.openh264 2.5.1beta i gnome-nightly 620.1 kB / 971.2 kB 14. [✗] com.slack.Slack stable u flathub 129.6 MB / 133.2 MB Warning: While trying to apply extra data: apply_extra script failed, exit status 256 Warning: While trying to apply extra data: apply_extra script failed, exit status 256 Error: While trying to apply extra data: apply_extra script failed, exit status 256 Changes complete. error: There were one or more errors -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-software in Ubuntu. https://bugs.launchpad.net/bugs/2061728 Title: Flatpak Apps don't launch from GNOME Software Status in gnome-software package in Ubuntu: Confirmed Bug description: Install apps from gnome-software. Open the app from gnome-software,the app crash with the next error: "ldconfig failed, exit status 256" ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: gnome-software 46.0-1ubuntu2 ProcVersionSignature: Ubuntu 6.8.0-25.25-generic 6.8.1 Uname: Linux 6.8.0-25-generic x86_64 ApportVersion: 2.28.0-0ubuntu1 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Tue Apr 16 07:58:06 2024 InstallationDate: Installed on 2024-04-08 (8 days ago) InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Daily amd64 (20240407.2) InstalledPlugins: gnome-software-plugin-flatpak 46.0-1ubuntu2 gnome-software-plugin-snap 46.0-1ubuntu2 ProcEnviron: LANG=es_ES.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> SourcePackage: gnome-software UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/2061728/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp