Why the viewport is black with VCam actor enabled

Development Cinematics & Media Virtual Production
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1

Hi,
I followed the VCam official document (Controlling a Virtual Camera Actor using Live Link in Unreal Engine | Unreal Engine 5.5 Documentation | Epic Developer Community) step by step,but the viewport is black with Vcam actor enable.I switched from 5.3 to 5.4,the problem still exist.

I spend hours searching solution with Unreal Engine Forums、google and youtube, unfortunately I failed.

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2

If you go into unlit mode are things there? Could the exposure me way down?

3

Did you figure this out?
Im having the same issue with the VR template.
Issue is I need to produce a render of the scene in different cuts but cant as the cameras I bring in are all rendering black using Lit.