Auto Pay pulled incorrect amount this month

I've been on Auto Pay for quite a while now and it's always worked just fine. However, this past month, it left a small balance of $0.46 and I was wondering why. I also am scared I am going to be charged a late fee for not paying the full bill amount.

Can someone look at my account to see if there is a problem with the Auto Pay? I'd hate to see the billing get confused or messed up, even though the shortage was only a small amount.

Thank you!