There is no errors when testing local and the office choice is not included.
The minimal ISO works as expected
There has been no errors aka installing office locally - so I am so confused.
Despite previous test in which I had no errors - I have been able to verify partly.
But only on the full ISO which will have to be caused by something else. Maybe the time inbetween because I only build the full ISO when I am satisfied with the minimal.
I have no idea what caused this - and I don't understand - I will investigate.
The error is caused when building the full ISO.
The tools used to build the ISO will include a non functional line in the calamares configuration cause Calamares to error out.
As shown by @philm editing the configuration on the ISO before launching Calamares installer will prevent the error.
sudo sed -i '/officechooser/d' /etc/calamares/settings.conf
Or manually remove the line containg the text officechooser and save the file
sudo nao /etc/calamares/settings.conf
New ISOs have been build and uploaded