Is HDRP simply not supported on switch platform? I read in a few places it should work. Or does this error mean something else? I dont see pink materials I literally see nothing. I wonder if there is some workaround rather than simply converting to SRP, because Id like to keep HDRP for pc and use something else for switch if possible.
No, HDRP is not supported on Nintendo Switch.
It is not easy to handle, but it is possible to make projects that use HDRP for PC and URP for Switch, Lego Brick Tales and Road96 did this.