AutoCAD Eagle - there are still airwires

[al-ang]

I opened your project ESP Breakout Adapter v3.1B - SPX3819 - Mini in AutoCAD Eagle and noticed a warning "There are still airwires left". I'm new to the program and I am admittedly overwhelmed with Eagle so it's taking me forever to see what's causing the message. Do you know, and if so, is this a minor warning that can be ignored?

Your design rocks BTW. I only have one suggestion -- to add through holes for flash; I might like to add a wire to a button for flashing so when I embed this in a housing I can place a flash button someplace that's accessible (when the pcb board is buried in a device).

So far that change might be above my pay grade since it looks like the Eagle learning curve is pretty steep. Regardless, I really like your design. Please let us know if you've made any further improvements.