Erratum to: Black hole solution and strong gravitational lensing in Eddington-inspired Born–Infeld gravityShao-Wen Wei, Ke Yang and Yu-Xiao LiuEur. Phys. J. C, 75 7 (2015) 331DOI: https://doi.org/10.1140/epjc/s10052-015-3556-9