Only one eye working

In the unity editor everything is fine, but when I make a build, the view through the right eye is almost black. Any idea what could be causing this problem?

Are you using SRP, URP, HDRP, or LWRP? These are not currently supported.

Thanks for the reply. I managed to fix it in the end. I was creating and destroying the camera rig a few times and it seems this was causing the problem. I changed it so that the camera was created just once at the beginning and this fixed it. We’re not using SRP, URP, HDRP, or LWRP.

same problem, only used built-in RP