Dryer Tries To Heat

When I start my dryer, it runs fine except recently when I start the Dryer it tries to heat up for about a minute (I can feel the heat) but then just stops heating.

Now, (it’s been a few days) I cleaned out everything thinking it just was accumulated lint and now it’s not heating at all. When I start the dryer, everything runs fine but no heat at all. I did notice that every couple minutes it makes a rattling noise. I’m going to make the assumption that it is the unit trying to heat up the dryer.

What should I check first? Next?
Thanks