Added functions for adding items to a todolist

routes/api/v1/lists_list.go

@@ -16,6 +16,11 @@ func GetListsByUser(c echo.Context) error {
 
 	allLists, err := models.GetListsByUser(&currentUser)
 	if err != nil {
+
+		if models.IsErrListDoesNotExist(err) {
+
+		}
+
 		return c.JSON(http.StatusInternalServerError, models.Message{"Could not get lists."})
 	}