Because it was deleted for an unknown reason. I try to find out if that's related to the UNA framework or to my storage provider. Following the path of the example pic, it turns out that the whole folder structure below bx_perons_pictures_resized has vannished.

My guess is, that data that is not called in a certain time-frame gets automatically deleted. For that reason, I suspect my cloud storage provider to have some rules active that cause that automatic deletion. Just want to make sure that it cannot be on UNA framework's side, Leonid.