This was announced, as a general incompatibility between all currently available QTS versions, and Roon 2.65.
You have basically 2 options:
- Stick with the last build of Roon 2.64 (B1646) and supress/refuse all updates in future
- Run Roon 2.65 in a docker container, i.e. create your customized docker image and install it via Container Station on QNAP
I have a similarly powerful QNAP NAS and can confirm, the latter variant works well. It just requires some understanding how docker works, a strategy which folders you want to share, and troubleshooting regarding share/paths.