From 913b5f2fb1503d22274903a20e2470c484e9f548 Mon Sep 17 00:00:00 2001
From: Ram Rachum <ram@rachum.com>
Date: Mon, 18 Dec 2023 16:41:33 +0200
Subject: [PATCH] Fix exception cause in agent_builder.py (#1007)

---
 autogen/agentchat/contrib/agent_builder.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/autogen/agentchat/contrib/agent_builder.py b/autogen/agentchat/contrib/agent_builder.py
index 91386519dc1a..d16e04307c3c 100644
--- a/autogen/agentchat/contrib/agent_builder.py
+++ b/autogen/agentchat/contrib/agent_builder.py
@@ -446,7 +446,7 @@ def load(
             try:
                 with open(filepath) as f:
                     cached_configs = json.load(f)
-            except FileNotFoundError:
-                raise FileNotFoundError(f"{filepath} does not exist.")
+            except FileNotFoundError as e:
+                raise FileNotFoundError(f"{filepath} does not exist.") from e
             _config_check(cached_configs)
             return self.build(cached_configs=cached_configs, **kwargs)