From 5271fd76f1922a02a61f6a570c53d7b5a5bc1ab1 Mon Sep 17 00:00:00 2001
From: Bagatur <22008038+baskaryan@users.noreply.github.com>
Date: Fri, 20 Jun 2025 14:46:50 -0700
Subject: [PATCH] core[patch]: check before removing tags (#31691)

---
 libs/core/langchain_core/callbacks/base.py | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/libs/core/langchain_core/callbacks/base.py b/libs/core/langchain_core/callbacks/base.py
index 1a792521f07..5b0aa17fe91 100644
--- a/libs/core/langchain_core/callbacks/base.py
+++ b/libs/core/langchain_core/callbacks/base.py
@@ -1069,8 +1069,10 @@ class BaseCallbackManager(CallbackManagerMixin):
             tags (list[str]): The tags to remove.
         """
         for tag in tags:
-            self.tags.remove(tag)
-            self.inheritable_tags.remove(tag)
+            if tag in self.tags:
+                self.tags.remove(tag)
+            if tag in self.inheritable_tags:
+                self.inheritable_tags.remove(tag)
 
     def add_metadata(
         self,
@@ -1094,8 +1096,8 @@ class BaseCallbackManager(CallbackManagerMixin):
             keys (list[str]): The keys to remove.
         """
         for key in keys:
-            self.metadata.pop(key)
-            self.inheritable_metadata.pop(key)
+            self.metadata.pop(key, None)
+            self.inheritable_metadata.pop(key, None)
 
 
 Callbacks = Optional[Union[list[BaseCallbackHandler], BaseCallbackManager]]