Corrigendum to "Optimization design of horizontal well fracture stage placement in shale gas reservoirs based on an efficient variable-fidelity surrogate model and intelligent algorithm" [Energy Rep. 8 (2022) 3589–3599]. (November 2022) - Zhao, Guoxiang; Yao, Yuedong; Wang, Lian; Adenutsi, Caspar Daniel; Feng, Dong; Wu, Wenwei