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fix: Ensure attribute existence before accessing in AgentExecutor initialization (#4667)

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* Add attribute check for 'chat_history' before accessing it in agent.py

* Ensure attribute existence before accessing in AgentExecutor initialization
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Gabriel Luiz Freitas Almeida 2024-11-18 10:38:11 -03:00 • committed by GitHub
commit 95779c8cef
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1 changed files with 8 additions and 5 deletions
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13
src/backend/base/langflow/base/agents/agent.py
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@ -122,18 +122,21 @@ class LCAgentComponent(Component):
if isinstance(agent, AgentExecutor): if isinstance(agent, AgentExecutor):
runnable = agent runnable = agent
else: else:
if not self.tools: if not hasattr(self, "tools") or not self.tools:
msg = "Tools are required to run the agent." msg = "Tools are required to run the agent."
raise ValueError(msg) raise ValueError(msg)
handle_parsing_errors = hasattr(self, "handle_parsing_errors") and self.handle_parsing_errors
verbose = hasattr(self, "verbose") and self.verbose
max_iterations = hasattr(self, "max_iterations") and self.max_iterations
runnable = AgentExecutor.from_agent_and_tools( runnable = AgentExecutor.from_agent_and_tools(
agent=agent, agent=agent,
tools=self.tools, tools=self.tools,
handle_parsing_errors=self.handle_parsing_errors, handle_parsing_errors=handle_parsing_errors,
verbose=self.verbose, verbose=verbose,
max_iterations=self.max_iterations, max_iterations=max_iterations,
) )
input_dict: dict[str, str | list[BaseMessage]] = {"input": self.input_value} input_dict: dict[str, str | list[BaseMessage]] = {"input": self.input_value}
if self.chat_history: if hasattr(self, "chat_history") and self.chat_history:
input_dict["chat_history"] = data_to_messages(self.chat_history) input_dict["chat_history"] = data_to_messages(self.chat_history)
if hasattr(self, "graph"): if hasattr(self, "graph"):