Getting dark BaseColor when creating 3D Imposter Sprites using RenderToTexture_LevelBP

I’m following the Render 3D Imposter Sprites documentation. Everything went well except the BaseColor. The screenshot below shows the difference. The left image is what I got while the right image is what I should get based on the documentation. I double checked that I followed every step of the process. I don’t have any lights in the scene or any post-process volume. I’m using Unreal Engine 4.22.3. Not sure what’s happening here. Looking for assistance.