---
title: MISSING_CHECKPOINTER
---



built-in LangGraph persistence를 사용하려고 하지만 checkpointer를 제공하지 않았습니다.

이는 [`StateGraph`](https://reference.langchain.com/python/langgraph/graphs/#langgraph.graph.state.StateGraph) 또는 [`@entrypoint`](https://reference.langchain.com/python/langgraph/func/#langgraph.func.entrypoint)`compile()` 메서드에 `checkpointer`가 누락되었을 때 발생합니다.

## Troubleshooting

다음 방법들이 이 오류를 해결하는 데 도움이 될 수 있습니다:

-   checkpointer를 초기화하고 [`StateGraph`](https://reference.langchain.com/python/langgraph/graphs/#langgraph.graph.state.StateGraph) 또는 [`@entrypoint`](https://reference.langchain.com/python/langgraph/func/#langgraph.func.entrypoint)`compile()` 메서드에 전달하세요.

```python
from langgraph.checkpoint.memory import InMemorySaver
checkpointer = InMemorySaver()

# Graph API
graph = StateGraph(...).compile(checkpointer=checkpointer)

# Functional API
@entrypoint(checkpointer=checkpointer)
def workflow(messages: list[str]) -> str:
    ...
  • LangGraph API를 사용하면 checkpointer를 수동으로 구현하거나 구성할 필요가 없습니다. API가 모든 persistence 인프라를 자동으로 처리합니다.

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