Erratum to: Measurement of forward J/ψ production cross-sections in pp collisions at s = 13 $$ \sqrts=13 $$ TeV

An issue has been identified in the simulated samples used to calculate the track reconstruction efficiencies, which affects the published J/ψ production cross-section in pp collisions at √s = 13TeV [1]. A brief description of the nature of the problem is provided and then the corrected results are given.