Merge pull request #11845 from lobatt/master

Issue #11836

api/server/server.go

@@ -1297,7 +1297,7 @@ func makeHttpHandler(eng *engine.Engine, logging bool, localMethod string, local
 		}
 
 		if version.GreaterThan(api.APIVERSION) {
-			http.Error(w, fmt.Errorf("client and server don't have same version (client : %s, server: %s)", version, api.APIVERSION).Error(), http.StatusNotFound)
+			http.Error(w, fmt.Errorf("client and server don't have same version (client API version: %s, server API version: %s)", version, api.APIVERSION).Error(), http.StatusNotFound)
 			return
 		}