The word(s) "err" appears 111 time(s) in 111 verse(s) in Quran in Abdullah Yusuf Ali translation.

(101) It is He Who has sent amongst the Unlettered a messenger from among themselves, to rehearse to them His Signs, to sanctify them, and to instruct them in Scripture and Wisdom,- although they had been, before, in manifest error;-

(102) When they are cast therein, they will hear the (terrible) drawing in of its breath even as it blazes forth,

(103) Or do ye feel secure that He Who is in Heaven will not send against you a violent tornado (with showers of stones), so that ye shall know how (terrible) was My warning?

(104) But indeed men before them rejected (My warning): then how (terrible) was My rejection (of them)?

(105) Say: "He is (Allah) Most Gracious: We have believed in Him, and on Him have we put our trust: So, soon will ye know which (of us) it is that is in manifest error."

(106) But the Thamud,- they were destroyed by a terrible Storm of thunder and lightning!

(107) For what Day are these (portents) deferred?

(108) And by those who glide along (on errands of mercy),

(109) And had preferred the life of this world,

(110) Because there came to him the blind man (interrupting).