better error message on parsing errors (#11342)

9 months ago · bdf865d8e8
parent b3c83fdd33
commit bdf865d8e8
1 changed files with 12 additions and 2 deletions
--- a/libs/langchain/langchain/agents/agent.py
+++ b/libs/langchain/langchain/agents/agent.py
@ -931,7 +931,12 @@ class AgentExecutor(Chain):
            else:
                raise_error = False
            if raise_error:
-                raise e
+                raise ValueError(
+                    "An output parsing error occurred. "
+                    "In order to pass this error back to the agent and have it try "
+                    "again, pass `handle_parsing_errors=True` to the AgentExecutor. "
+                    f"This is the error: {str(e)}"
+                )
            text = str(e)
            if isinstance(self.handle_parsing_errors, bool):
                if e.send_to_llm:
@ -1027,7 +1032,12 @@ class AgentExecutor(Chain):
            else:
                raise_error = False
            if raise_error:
-                raise e
+                raise ValueError(
+                    "An output parsing error occurred. "
+                    "In order to pass this error back to the agent and have it try "
+                    "again, pass `handle_parsing_errors=True` to the AgentExecutor. "
+                    f"This is the error: {str(e)}"
+                )
            text = str(e)
            if isinstance(self.handle_parsing_errors, bool):
                if e.send_to_llm: