Install qubeos usb drive persistent gi.repository.Glib.Error

Hello everybody,

I would like to make a usb drive persistent. Do I have to make any previous steps?

Anyway, I started to install QubesOs. In a step of installation the installer stop with the following message:


Please, watch the following message:

Thanks in advance!!!

What did you do? What are the ‘previous steps’?

Thank you anyway.
Eventually, I have used a gparted iso live and I have wiped old partitions from my SSD