Flatpak not installable on Ubuntu 20.04.4

[SalusVF]

I had Tauon Music installed as Flatpak on my computer. Suddenly after a normal restart I could not find it anymore. I tried to install it again but it keeps giving me this error.

Warning: Wrong origin flathub for update
Error: Wrong origin flathub for update
error: Failed to install com.github.taiko2k.tauonmb: Wrong origin flathub for update

After that I tried to install another Flatpak application, just to see if the problem was only in your app or a general problem from Flatpaks. I could install the other app without any issues. So I guess it could be something wrong with yours.

Thanks,
Salus

[Taiko2k]

Hmm, seems to be working for me. Try run flatpak repair --user && flatpak repair --system

Then try again flatpak install com.github.taiko2k.tauonmb

[SalusVF]

I have tried what you said and unfortunately it does not work. I am still having the same error.
I have also tried the command in two flavors:

• flatpak install flathub com.github.taiko2k.tauonmb
• flatpak install com.github.taiko2k.tauonmb

[SalusVF]

I have also tried upgrading to ubuntu 22.04 and reinstalling flatpak. Somehow it is the only flatpak that fails on installing. All other flatpaks work just fine.

[Taiko2k]

I have no idea on how to further diagnose this. Maybe try ask on the Flatpak matrix or discourse.

[SalusVF]

Thanks I'll try there and in case I get a solution I will post it here.

[SalusVF]

I am going to close these issue, since it is not fair for you now that I have discovered that the same problem appears with GIMP and Curtail flatpak applications. I will comment ayway if I find a solution,though.

Thanks for your help.

[SalusVF]

I have finally solved it by completely removing flatpak by doing the following steps:

flatpak uninstall --all
sudo apt purge --autoremove flatpak
sudo rm -r /var/lib/flatpak

I have manually removed the ppas from flatpak from Software Updates. After that I have rebooted.
Then I installed flatpak again and addedflathub as a repository. Evereything worked fine having done that.