Erratum: Low luminosity Type II supernovae – III. SN 2018hwm, a faint event with an unusually long plateau. Issue 1 (23rd April 2021) - Reguitti, A; Pumo, M L; Mazzali, P A; Pastorello, A; Pignata, G; Elias-Rosa, N; Prentice, S J; Reynolds, T; Benetti, S; Mattila, S; Kuncarayakti, H; Rodrìguez, O