Update app.py

app.py

@@ -128,7 +128,7 @@ model.eval()
 
 with open("tagger_tags.json", "r") as file:
     tags = json.load(file) # type: dict
-allowed_tags = tags.keys()
+allowed_tags = list(tags.keys())
 
 @spaces.GPU(duration=5)
 def create_tags(image, threshold):