Flatpak Theme install doesnt work

[bigc0127]

Oops! Operation failed...

=========== ERROR LOG ===========

No error log found <<<<<<

=========== ERROR INFO ==========
FOUND :
>>> lib-core.sh
>>> lib-flatpak.sh
>>> lib-install.sh
>>> tweaks.sh
SNIPPET:
>>> ostree --repo="$repo_dir" commit -b "runtime/$gtk3_app_id/$arch/$GTK_3_THEME_VER" --add-metadata-string "xa.metadata=$(cat $build_dir/metadata)" --link-checkout-speedup "$build_dir"
TRACE :
>>> signal_error
>>> pakitheme_gtk3
>>> connect_flatpak
>>> main

=========== SYSTEM INFO =========
DISTRO : vanilla;debian;2.0
SUDO : no
DESKTOP : gnome
REPO : 2024-08-19T16:07:22+0000

For whatever reason, the flatpak install fails. and when it doesn't fail like this it claims it cannot find the theme at all.

[vinceliuice]

Does ostree appstream-util installed success ?