Error in Demo-Image.ipynb file in last cell.

[Siddharth1698]

---

UnboundLocalError Traceback (most recent call last)
in ()
1 results = model.detect([image], verbose=0)
2 r = results[0]
----> 3 frame = display_instances(image, r['rois'], r['masks'], r['class_ids'], class_names, r['scores'])
4 cv2_imshow(frame)
5

in display_instances(image, boxes, masks, ids, names, scores)
35 # apply mask for the image
36 # by mistake you put apply_mask inside for loop or you can write continue in if also
---> 37 image = apply_mask(image, mask)
38
39 return image

UnboundLocalError: local variable 'mask' referenced before assignment