Update app.py

app.py

@@ -17,7 +17,7 @@ def index():
 def analyze_metadata():
     data = request.json
     if not data.get('token',''):
-        return jsonify('Enter your Huggingface token')
+        return jsonify({"status": "error", "message": 'Enter your Huggingface token'})
 
     center = DatasetCommandCenter(token=data.get('token'))
     return jsonify(center.get_dataset_metadata(data.get('dataset_id')))