Update app.py

app.py

@@ -38,11 +38,14 @@ async def echo(message, history, state, persona):
         attached_file = find_attached_file(filename, state["attached_files"])
         if attached_file is None: 
             path_gcp = await client.files.upload(path=path_local)
+            path_gcp = types.Part.from_uri(
+                file_uri=path_gcp.name, mime_type=path_gcp.mime_type
+            ),
             state["attached_files"].append({
                 "name": filename,
                 "path_local": path_local,
                 "gcp_entity": path_gcp,
-                "path_gcp": path_gcp.name,
+                "path_gcp": path_gcp,
                 "mime_type=": path_gcp.mime_type,
                 "expiration_time": path_gcp.expiration_time,
             })