Two frets, One note

What can I do to stop 2 frets with the same note? I am experiencing this problem on the high E string on the 14th and 15th frets. The rest of the notes on the fretboard are all good.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 1
crwdns2934285:0crwdne2934285:0