I've been learning ArcGIS through my school, and we started working on the tutorial Map and analyze food access from ArcGIS Learn. At some point (I think the section is titled Summarize potential food deserts), we are instructed to use the Summarize Within analysis tool with Emergency Food Providers as the summary polygon layer and a previously-created Enriched Ward Boundaries layer as the input features. Although there is clearly-visible overlap between the EFP layer and the EWB layer, Summarize Within returns only the warning "Empty layer generated."
Any and all help is greatly appreciated!