Update app.py

app.py

@@ -20,11 +20,10 @@ def analysis(fen):
         response = requests.get(url, params=params, timeout=10)
         response.raise_for_status()
         
-        return response.json()
+        return response.json(), None
     
     except requests.exceptions.RequestException as e:
-        print(f"Error calling Lichess API: {e}")
-        return None
+        return None, str(e)
 
 mcp = gr.Interface(
     fn=analysis,