"Can't find project or library" error message

JKPieterse 

I am taking a beginner Udemy class on VBA and this was an example I was copying (which worked in the professor's samples) where you place a shape on top of a column, rename the shape "Col A" "Col B" etc, and add VBA macro to the shape which I already typed into the code window.  I checked to make sure it was an exact copy of the professor's code.  The shape is a rectangle from the shapes choices at the top.  I also checked the box that opened for the object libraries to make sure it matched the professor's libraries that are checked, and they are the same.  I tried adding other libraries and nothing I did worked.  Thanks for your help.