In a fresh new unity project (2018.4 and 2019.4, too) after I install the SteamVR from the unity asset store, when asked I selected the legacy VR option, SteamVR input config done, but I always got this error. I'm using rift s, oculus and steamVR dasboards are running.
Anyone else has this problem or the error is in my PC? Games etc, working well...