Help!

I'd love to try this, but it looks like maybe something was left off the ingredients list? There seems to be a lot of liquid in the picture (as a tikka curry would have), and yet the recipe only calls for under a cup of oil and tomato sauce. Maybe we should be adding water, or cream, or more tomato sauce? It seems like the chicken would burn with so little liquid to cook in. Please advise! would love to make it for shabbat, bs'd! thanks!