Looking for some help

So I’m building a 3D experience on image tracking in the studio. It’s a car that drives around a block.

I’ve animated the car using bezier curves which is made up for 4 seperate beziers and is linked by animating the relativeTo transform. The car is animated along the path beautifly and all gets displayed correctly on preview.

I also have a traffic light which is meant to be green for 10 seconds and switch to red for 3 seconds. However my first issue I ran into is when I create states for the emissive map on the traffic light to switch between “go” and “stop”, the experience fails to load on the image tracking.

Among a few other road blocks I have ran into, I was really hoping I could establish a line of comunication with someone to help me work through some of these.