FaceARSample issue

Hi everyone I was hoping someone could help me with this, I got the FaceARSample deployed on my iPhone but it kicks up an issue, the app starts and tracks my face for a second, then kicks up an error and says it’s trying to track my face again, while still tracking my face in the background, any idea how to fix this? Seems to track fine but I get this, I’m stuck

If you move your phone camera back to your mouth, it will be tracking.