[SteamVR] Initialization failed. Please verify that you have SteamVR installed, your hmd is functioning, and OpenVR Loader is checked in the XR Plugin Management section of Project Settings.

VR equipment: HTC VIVE COSMOS

VR plug-in: SteamVR Plugin 2.7.3

Unit version: 2019.4.40f1

Error reporting scenario:

Each time you close unity, reopen it. Run the project and then report an error.

Solution:

Reopen the Project Setting panel of unity engine and close it. The error is solved. (unity menu bar find Editor->Project Settings, open, click the fork to close the panel). Because I am using git to do version control, I found that some oid in the file ProjectSettings.asset will change every time I report an error, so I thought it was related to Project Settings. I tried reopening the Project Settings panel and it worked. If you are using git to do version control, you can try to recover the ProjectSettings.asset file to solve the bug.