Hi @Mecka
We’re investigating the problem internally.
For now though, you can workaround the problem by opening Terminal and running the following commands.
rm -f eos-update-flatpak-repos
wget --quiet https://raw.githubusercontent.com/endlessm/eos-boot-helper/e510a0b4/eos-update-flatpak-repos
chmod +x eos-update-flatpak-repos
sudo ./eos-update-flatpak-repo
flatpak install flathub org.libreoffice.LibreOffice
Now try the OS update again and you should be advanced to EOS-3.7.