Update app.py

app.py

@@ -20,7 +20,7 @@ class GaiaFileTool(Tool):
     name = "download_gaia_file"
     description = "Downloads a file associated with a given GAIA task ID and returns its content. It takes 'task_id' as input and returns the file content as a string. Use this when a question refers to an external file."
     inputs = {"task_id": {"type": "str", "description": "The task ID for which to download the file (e.g., '2345')."}}
-    output_type = str
+    output_type = "str" # Changed from str to "str" to match expected string type
 
     def __init__(self, api_base_url=DEFAULT_API_URL):
         super().__init__()