some text was on a locked layer and the font could not be replaced in Illustrator

I am trying to resolve missing fonts but I keep getting this error.

In fact, although it shows this missing font in the "Fonts in Document:" window, when I select it and choose find, there are no ojbects highlighted.

I can't find a single object with any text that hasn't already been replaced to an available font. I have no layers with lock icon(I've expanded every layer/sub layer)

If I select all and go to Object  menu, "Unlock All" is already grayed out.

{Renamed By MOD}