iPadOS / error 19651012

I created collections synced with Lightroom Classic on Windows 11.
I can successfully load these collections onto my Android smartphone and store the photos locally.
When I try to do the same thing on my iPad Pro, I encounter the following issue: the initial loading of the collections works fine, and I can store the photos from these collections locally: But when I return to the app, the photos in these collections load but do not display. If I close and restart the app, I get error 19651012. I’ve already uninstalled and reinstalled the app several times, without success. I should note that I’m running the latest version of iPadOS.