How can I get rid of the blue tinge in the compositor

I’m trying to follow a tutorial here: For some reason, I’m getting a blue tinge on my image. Can someone tell me what I did wrong?

This is from the tutorial. How it should look.

This is what I get.

Blend file:

way i break it down is mute things until the blue goes away… came across your RGB Curves node which is causing it.

I had done that. But I went back and played around with the curve and got rid of the blue tinge. Thanks.