Corrigendum to: Lusternik-Schnirelman and Morse Theory for the Van der Waals-Cahn-Hilliard equation with volume constraint [Nonlinear Analysis 220 (2022) 112851] - Benci, Vieri; Nardulli, Stefano; Acevedo, Luis Eduardo Osorio; Piccione, Paolo (Nonlinear Analysis, 2024)