Update app.py

app.py

@@ -45,7 +45,7 @@ num_classes = len(classes)
 
 # Set up the neural network
 print('Load Network')
-with open('models/darknet.pkl', 'rb') as f:
+with open("models/darknet.pkl", 'rb') as f:
     model = pickle.load(f)
 
 print('Successfully loaded Network')