correction of error message

pkg/memostream/memoServerHandlerMain.go

@@ -185,7 +185,7 @@ func (ms *memoServer) mainHandler(w http.ResponseWriter, req *http.Request) {
 		_, err = os.Stat(path)
 		if os.IsNotExist(err) {
 			// if file not exist send 404
-			ms.DoPanicf(w, http.StatusNotFound, "file not found: %ms", path)
+			ms.DoPanicf(w, http.StatusNotFound, "file not found: %s", path)
 			http.Error(w, err.Error(), http.StatusNotFound)
 			return
 		} else if err != nil {