Animator warning in editor, animation is preventing script from working

So I’ve been trying to figure out why my simple move script isn’t working when I have animations assigned to my character (it works just fine when I take the animations off). I suspect it has something to do with this warning that is on my animator component, and I tried to google it but didn’t find anything. Can anyone tell me what this means and what I need to fix in order to allow the animator and my script to work together? My project is 2D and I am using sprites to animate my character.

I actually solved this myself if anyone else is experiencing the same problem. I was creating the animations manually by dragging single sprites into the animation window, which Unity didn’t seem to like. When I decided to create animations by dragging all of the sprites into the scene view, my script worked.
But still, does anyone know what that screenshot means? I’d like to know what stream: 12 120.0% means in particular and if this will have a negative impact on game performance.