Error is the second mini-album by the South Korean boy band VIXX.

VIXX began promoting this album on MBC M's Show Champion on October 15, 2014.

[4][5] "Error" was written by lyricist Kim Eana, Jellyfish CEO Hwang Se-jun and in house producers MELODESIGN.

[8] The music video features Heo Youngji from Kara as Cyborg Girl.

[11] The single peaked at number 6 on the Oricon charts and sold over 19,381 CD copies.