Who replaced don knotts in 1965 on Andy griffith show?

Don Knotts, who played Barney Fife on "The Andy Griffith Show," left the series in 1965. He was replaced by actor Jack Burns, who portrayed a new character named Deputy Warren Ferguson. However, Burns' character did not resonate with audiences in the same way as Knotts' Barney Fife, and he left the show after just one season.