Erratum: Probing Higgs CP properties at the CEPC in the using optimal variablesQiyu Sha, Abdualazem Fadol, Fangyi Guo, Gang Li, Yaquan Fang, Jiayin Gu and Xinchou LouEur. Phys. J. C, 83 1 (2023) 62DOI: https://doi.org/10.1140/epjc/s10052-023-11208-4