Nintendo Switch Support. Classes not defined.

I'm attempting to build my game for the Nintendo Switch and I'm finding that when I go to build I get many errors from photon of the form:
Assets/Photon Unity Networking/Plugins/PhotonNetwork/Extensions.cs(15,43): error CS0234: The type or namespace name `Hashtable' does not exist in the namespace `ExitGames.Client.Photon'. Are you missing an assembly reference?
The errors seem to mostly be on lines like this:
using Hashtable = ExitGames.Client.Photon.Hashtable;
The issue also occurs for ExitGames.Client.Photon.SupportClass

So I suppose the first question is does Photon support the switch? / Are there any obvious reasons it wouldn't work?
Other than that, have errors like this been reported on other platforms? I'm guessing Hashtable and SupportClass are part of photon's native Dlls. Does this point to some platform-independent issue that can be remedied by adding a reference or something like that?

Thank you for your time.