Improve api logging when handler/endpoint does not exist

api/authentication.go

@@ -151,7 +151,7 @@ func authenticateRequest(w http.ResponseWriter, r *http.Request, targetHandler h
 	switch requiredPermission { //nolint:exhaustive
 	case NotFound:
 		// Not found.
-		tracer.Trace("api: authenticated handler reported: not found")
+		tracer.Debug("api: no API endpoint registered for this path")
 		http.Error(w, "Not found.", http.StatusNotFound)
 		return nil
 	case NotSupported:

api/router.go

@@ -235,6 +235,7 @@ func (mh *mainHandler) handle(w http.ResponseWriter, r *http.Request) error {
 		http.Error(lrw, "Method not allowed.", http.StatusMethodNotAllowed)
 		return nil
 	default:
+		tracer.Debug("api: no handler registered for this path")
 		http.Error(lrw, "Not found.", http.StatusNotFound)
 		return nil
 	}