python

LangChain Vector Store Document Not Found

ValueError: Could not find.*in vectorstore

Fixes

1.Verify documents were added to vectorstore before query
2.Check embedding model matches between index and query time
3.Rebuild index if embedding model changed

langchainvectorstoreretrieval

Related Errors

Asyncio event loop already running

RuntimeError: This event loop is already running

•Use nest_asyncio.apply() to allow nested event loops
•Use asyncio.run_coroutine_threadsafe() instead of asyncio.run()

Coroutine never awaited

RuntimeWarning: coroutine '.*' was never awaited

•Add 'await' before the coroutine call
•Use asyncio.create_task() to schedule the coroutine

Asyncio task was cancelled

asyncio\.CancelledError

•Handle CancelledError in try/except within the task
•Use asyncio.shield() to protect critical sections from cancellation