Mealie - Is a manual backup possiible?

HI,

I had Umbrel OS running on a small PC.

Yesterday, I tried to restart it and it does not appear anymore on the network.
If I connect a screen, I see the following message:

Pressing Enter simply comes to the same message.
I consider reinstalling UmbrelOS but I would like to first backup my recipes database.
Using a live Linux on a usb stick, I can see the files in …app-data/mealie/data/recipes

Can I simply download the content of this repertory and copy it back in a new mealie instance?
If not, how could I get these back in a newly installed UmbrelOS/Mealie?

Thank you in advance