Error in some package when installing new softwares

Hi all!

This is my first post and first installation of Endeavour OS.
I used a lot OpenSUSE and Fedora.

I’ve got some problems…
I’ve installed this OS just 5 mins ago, with GNOME.
After install, updated Arch Mirrors, update Endeavour Mirrors and checked system updates.
Opened Firefox to install some extensions for my desktop, installed gnome extension for firefox but here is the first problem: No such native application org.gnome.chrome_gnome_shell

So I have managed to install flatpak for GNOME Extensions but here we go with the second problem:

sudo pacman -S flatpak
risoluzione delle dipendenze in corso...
:: Ci sono 5 fornitori disponibili per xdg-desktop-portal-impl
:: Repository extra
   1) xdg-desktop-portal-gnome  2) xdg-desktop-portal-gtk  3) xdg-desktop-portal-kde
:: Repository community
   4) xdg-desktop-portal-lxqt  5) xdg-desktop-portal-wlr

Digita un numero (default=1): 
ricerca dei pacchetti in conflitto in corso...

Pacchetto (7)                   Nuova versione  Variazione netta  Dimensione del download

extra/appstream                 0.16.1-1                9,08 MiB                 2,28 MiB
community/libxmlb               0.3.10-1                1,23 MiB                         
extra/ostree                    2022.7-1                4,35 MiB                         
extra/xdg-desktop-portal        1.16.0-1                2,01 MiB                         
extra/xdg-desktop-portal-gnome  43.1-1                  0,66 MiB                         
extra/xdg-desktop-portal-gtk    1.14.1-1                0,48 MiB                         
extra/flatpak                   1:1.15.2-1              6,78 MiB                 1,74 MiB

Dimensione totale dei pacchetti da scaricare:    4,02 MiB
Dimensione totale dei pacchetti da installare:  24,60 MiB

:: Vuoi procedere con l'installazione? [S/n] 
:: Download dei pacchetti in corso...
impossibile scaricare appstream-0.16.1-1-x86_64.pkg.tar.zst
impossibile scaricare flatpak-1:1.15.2-1-x86_64.pkg.tar.zst
 Totale (2/2)                   4,0 MiB  18,9 MiB/s 00:00 [-------------------------------] 100%
errore: impossibile scaricare il pacchetto 'appstream-0.16.1-1-x86_64.pkg.tar.zst' da : The requested URL returned error: 404
errore: impossibile scaricare il pacchetto 'flatpak-1:1.15.2-1-x86_64.pkg.tar.zst' da : The requested URL returned error: 404
attenzione: impossibile scaricare alcuni file
errore: impossibile eseguire l'operazione richiesta (impossibile scaricare alcuni file)
Si sono verificati degli errori, nessun pacchetto è stato aggiornato.

Really don't know how to resolve...

You need to update your system before or during installing software. Try this command instead:

sudo pacman -Syu flatpak

On Arch-based distros, you should never try to install software into a system that hasn’t been updated. The package management system isn’t designed to support partial updates.

1 Like

Thank you, but does the update system feature in welcome program does this thing?
Because it says that there is nothing to do.
Rebooted, changed mirror (added Germany [I had only Italy]) and now worked

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