Hi, I just wanted to know what is wrong with my Guitar. Every time I try to play either the 11th fret or 14th fret on the high E string they sound the same as the fret above them. For example, the 14th fret sounds just like the 15th fret and I'm not sure how to fix it. Please, give me some tips on what to do. I'm a beginner in Guitar.
Thank you.