Update app.py

app.py

@@ -244,20 +244,10 @@ def save_uploaded(file_obj):
     """Return a filesystem path for the uploaded file object."""
     if not file_obj:
         return None
-    if isinstance(file_obj, dict):
-        for key in ("name", "path", "file"):
-            p = file_obj.get(key)
-            if p and os.path.exists(p):
-                return p
     if isinstance(file_obj, str) and os.path.exists(file_obj):
         return file_obj
-    if hasattr(file_obj, "name") and os.path.exists(file_obj.name):
-        return file_obj.name
-    # fallback: dump bytes to tmp file
-    fd, tmp = tempfile.mkstemp(suffix=".csv")
-    with os.fdopen(fd, "wb") as f:
-        f.write(file_obj.read())
-    return tmp
+    return None
+
 
 def load_file_to_df(path):
     if path is None:
@@ -315,7 +305,7 @@ with gr.Blocks(title="Agentic Evaluation Framework") as demo:
                 "`task_id, task_type, prompt, agent, response, metadata`")
 
     with gr.Row():
-        file_upload = gr.File(label="Upload CSV", type="file")
+        file_upload = gr.File(label="Upload CSV", type="filepath", file_types=[".csv"])
         eval_btn = gr.Button("Run Evaluation", variant="primary")
 
     gallery = gr.Gallery(label="Visualizations", columns=2, height="auto")