I had a number of site setup in Local that were all working without issue. I upgraded to High Sierra and now none of them work unless the OSX Apache is stopped. When I try to visit them in the browser my default Apache site attempts to load. This happens even on Local sites that have nginx set as the server.
If I shutdown the OSX default Apache then the sites work as expected. However, before the upgrade, both Local sites and native Apache sites coexisted peacefully.