From f1f46afbd85b285e205cabcfeb44d0d1be0900d1 Mon Sep 17 00:00:00 2001
From: William Fu-Hinthorn <13333726+hinthornw@users.noreply.github.com>
Date: Wed, 6 Mar 2024 14:18:02 -0800
Subject: [PATCH] log error

---
 libs/core/langchain_core/tracers/langchain.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libs/core/langchain_core/tracers/langchain.py b/libs/core/langchain_core/tracers/langchain.py
index 15cb1977c28..5d4ebd4da87 100644
--- a/libs/core/langchain_core/tracers/langchain.py
+++ b/libs/core/langchain_core/tracers/langchain.py
@@ -177,6 +177,11 @@ class LangChainTracer(BaseTracer):
             run_dict = _run_to_dict(run)
             run_dict["tags"] = self._get_tags(run)
             self.client.update_run(run.id, **run_dict)
+            if run.error is not None and run.parent_run_id is None:
+                dbg_url = self.client.get_run_url(
+                    run=run, project_name=self.project_name
+                )
+                logger.info(f"See trace: {dbg_url}")
         except Exception as e:
             # Errors are swallowed by the thread executor so we need to log them here
             log_error_once("patch", e)