Erratum to: Search for the HH → $b\overline{b}b\overline{b}$ process via vector-boson fusion production using proton-proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector

One correction is noted for the paper. A wrong cross-section was used for the theory prediction in figure 6 due to not taking into account the VHH contamination properly in the rescaling formula for the signal samples.