Update app.py

app.py

@@ -285,6 +285,7 @@ def submitPhoto(img, rooms):
     sesh.items_layouts[sesh.current_img_signature] = bed_layout_new 
     rooms.append((img, sesh.current_img_signature))
     #return [(v,str(k)) for k,v in sesh.img_data.items()], gr.Image(label='Upload Room Photo
+    rooms = rooms if rooms else []
     return rooms, gr.Image(label='Upload Room Photo')
 
 def summarisePerStore():