Looks like some problem with your Unofficial Ring Connect integration (or maybe not a problem, as I have no idea what logging is normal for that device or what options you have enabled) -- based on a cursory glance of its code and the fact that some of it matches log entries you provided. (But it's always good to share what device and driver this is, as the above posts tell you how to do. This was a lucky find on my part.)
This is a third-party integration you added to your hub, and all messages you provided appear to be coming from that. It is not anything built-in to the hub, so you'll need to work with this developer's documentation, the developer themself, or fellow users of that integration to figure out more. Developers often provide documentation and a topic (thread) on the forum you can use for such discussion, so I'd start by finding that from wherever you obtained this code (even if it was HPM, that's not a location per se and will usually have a way to link you to the same, or you can search here). If you can't find anything on your own, asking in the topic is often a good way to reach the attention of others who may be able to help -- or you can change your topic title to something more descriptive now that you know, and it might catch the attention of others.
I am using the Unofficial Ring Integration and it's been working pretty flawlessly for a couple of weeks and then I too started getting this new error/warning a couple of days ago. I'm guessing that Ring may have changed their "API". I might try tracking down the developer in the app support page,
Thanks for the clue to click the orange warn text. It takes you back to the Ring device container - the top level container associated with your location.
Reaching out to @ardichoke or @morse.caleb to see if anyone is still supporting the code base. I installed Caleb's (no version history I can refer to unfortunately) and my Ring Alarm integration has been working great except for the new error above "Cannot create a adapter.shadow device because it is unsupported".
The "zid" is of a different range (the first segment is in a totally different range than any of my other devices).
It appears that some part of the Ring system is spinning up a new virtual device (type "adapter.shadow") and the code for the integration doesn't know what it is.
That seems to be getting attention currently--but I didn't see anything upon a quick glance about the Shadow Adapter. But, it could be a good reference for code updates.