diff --git a/libs/langchain/langchain/memory/vectorstore_token_buffer_memory.py b/libs/langchain/langchain/memory/vectorstore_token_buffer_memory.py
index b839bb1d514..ddefc55f7b7 100644
--- a/libs/langchain/langchain/memory/vectorstore_token_buffer_memory.py
+++ b/libs/langchain/langchain/memory/vectorstore_token_buffer_memory.py
@@ -167,6 +167,7 @@ class ConversationVectorStoreTokenBufferMemory(ConversationTokenBufferMemory):
             self._pop_and_store_interaction(buffer)
 
     def _pop_and_store_interaction(self, buffer: list[BaseMessage]) -> None:
+        input_ = buffer.pop(0)
         output = buffer.pop(0)
         timestamp = self._timestamps.pop(0).strftime(TIMESTAMP_FORMAT)
         # Split AI output into smaller chunks to avoid creating documents
@@ -174,7 +175,7 @@ class ConversationVectorStoreTokenBufferMemory(ConversationTokenBufferMemory):
         ai_chunks = self._split_long_ai_text(str(output.content))
         for index, chunk in enumerate(ai_chunks):
             self.memory_retriever.save_context(
-                {"Human": f"<{timestamp}/00> {input.content!s}"},
+                {"Human": f"<{timestamp}/00> {input_.content!s}"},
                 {"AI": f"<{timestamp}/{index:02}> {chunk}"},
             )
 
diff --git a/libs/langchain/langchain/output_parsers/fix.py b/libs/langchain/langchain/output_parsers/fix.py
index e8f26cb6220..34d214be51a 100644
--- a/libs/langchain/langchain/output_parsers/fix.py
+++ b/libs/langchain/langchain/output_parsers/fix.py
@@ -82,7 +82,7 @@ class OutputFixingParser(BaseOutputParser[T]):
                     try:
                         completion = self.retry_chain.invoke(
                             {
-                                "instructions": self.parser.get_format_instructions(),  # noqa: E501
+                                "instructions": self.parser.get_format_instructions(),
                                 "completion": completion,
                                 "error": repr(e),
                             }
@@ -119,7 +119,7 @@ class OutputFixingParser(BaseOutputParser[T]):
                     try:
                         completion = await self.retry_chain.ainvoke(
                             {
-                                "instructions": self.parser.get_format_instructions(),  # noqa: E501
+                                "instructions": self.parser.get_format_instructions(),
                                 "completion": completion,
                                 "error": repr(e),
                             }