Changed Air filter wont start on 2000 Toyota Avalon

I changed the air and Cabin filter on my Avlon and know it won't start any ideas?

Asked by for the 2000 Toyota Avalon
Look at the mass airflow meter make sure a piece of dirt did not get lodged where the air low meter reads air entering the engine. Make sure the air flow meter is plugged ion and air induction boot didn't fall off.