You have a backup plan with retention rules. Retention task fails with:
Error: An unsupported URI is specified: 'F:\Acronis\#arl:/B0FA4D42-6C34-4261-9A13-00731960BE51/74695400-3457-465B-BA6A-6BE8FAC21BCF/96D11AB5-FF69-4B4C-9884-4BE8778AAECB'.
Issue in the product.
The issue is fixed since Acronis Backup Cloud 7.5hf1. Download the latest builds from backup console and update the installed backup client on the affected machine.