Unknown object type serialized by server

Got this issue multiple times:
1: when loading in clearfell for the first time on a new huntress char
2,3: clicking potion well
4: ?, maybe related to using swirlies for the first time?
All of these on Vulkan, because dx12 makes the game into a ppt.

+1

Yeah same, getting this error a couple of times now. Performance is horrible on DX12 with drops from 240 to 15fps. Switched to Vulkan but it's only marginally better

+1 same error repeatedly

Same getting the error on new Huntress in new Dawn of the Hunt league. Happens when I tried to sell some items at Renly. Reloaded and try again...same issue.

Same as everybody else. New toon - Huntress. Just standing in Clearfell.

Likewise here...

Kept getting the same, switched back and forth from Vulkan <-> DX12 and that doesn't help.

I've used game repair and it seems to be working now (let's hope).
(Verify on Steam/PackCheck inside installation folder on standalone.)

I was able to solve it temporarily by verifying the integrity in Steam, but after talking with Una, I got the same error again.

Yep i have this erroe 2 times already :