another way to initialize an array to fix bug

src/actions/tutorialBuilderActions.js

@@ -243,10 +243,11 @@ export const resetTutorial = () => (dispatch, getState) => {
 
 export const readJSON = (json) => (dispatch, getState) => {
   dispatch(resetTutorial());
+  console.log(json.steps.map(() => {return {};}));
   dispatch({
     type: BUILDER_ERROR,
     payload: {
-      steps: new Array(json.steps.length).fill({})
+      steps: json.steps.map(() => {return {};})
     }
   });
   dispatch(tutorialTitle(json.title));