SlabAdsorptionSites detection for fcc110 terrace keyword error

My code uses the SlabAdsorptionSites for site detection. I am working with Pt fcc110, but running into the following errors. I tried to ignore the 2fold sites but had the same error with 3fold sites too.

File "main.py", line 208, in analyze_slab cas = SlabAdsorptionSites(full_slab, self.surface_type,allow_6fold=False,composition_effect=False, File "site-packages/acat/adsorption_sites.py", line 1395, in init self.populate_expanded_site_list() File "...acat/adsorption_sites.py", line 2520, in populate_expanded_site_list nsas = SlabAdsorptionSites(atoms, surface=new_surface,
File "...site-packages/acat/adsorption_sites.py", line 1398, in init self.postprocessing()
File ".../site-packages/acat/adsorption_sites.py", line 2461, in postprocessing self.get_labels() File ".../site-packages/acat/adsorption_sites.py", line 2790, in get_labels stlab = self.label_dict['|'.join(signature)] KeyError: '2fold|terrace'