Hello! I apologize in advance for this photo! ❌❌ Stool from yesterday…

Hello! I apologize in advance for this photo! ❌❌ Stool from yesterday's day such consistency. It was not like that before, is it diarrhea?? Why is stool so green? Not because of infection?? ? Or could it be from teeth? There are two lower teeth, I can't see anything at the top yet. Are these unprocessed food on the photo which are in chunks? Yesterday she didn't eat anything unusual. Apple, mashed potatoes, water, cake tried. Cake and before ate too.