I have been migrating my catalogs from Lightroom Classic to CC. Photos were syncing perfectly to the cloud and suddenly stopped. I have been stuck at 33,250 photos syncing for almost 4 hours. No changes are happening on my mobile apps. I have tried to delete photos or flag photos without any success. Still stuck at 33, 250 photo syncing. In addition, I have been unable now to migrate any more photos as I get an error when it says adding photos to albums. So frustrating!