Log exception in localhost setup

Author: jglogan

Sources/Helpers/APIServer/APIServer+Start.swift

@@ -116,7 +116,12 @@ extension APIServer {
                     // start up realhost DNS
                     group.addTask {
                         let localhostResolver = LocalhostDNSHandler(log: log)
-                        try localhostResolver.monitorResolvers()
+                        do {
+                            try localhostResolver.monitorResolvers()
+                        } catch {
+                            log.error("monitorResolvers failed with error \(error)")
+                            throw error
+                        }
 
                         let nxDomainResolver = NxDomainResolver()
                         let compositeResolver = CompositeResolver(handlers: [localhostResolver, nxDomainResolver])