Fix syntax error

app.py

@@ -397,7 +397,7 @@ class ConversationBot:
         print("===============Running run_image =============")
         print("Inputs:", image, state)
         print("======>Previous memory:\n %s" % self.agent.memory)
-        #image_filename = os.path.join('image', str(uuid.uuid4())[0:8] + ".png")
+        image_filename = os.path.join('image', str(uuid.uuid4())[0:8] + ".png")
         print("======>Auto Resize Image...")
         img = Image.open(image.name)
         width, height = img.size