Langflow - Astra DB vector store retriever error

[SuperAlkis]

Hello to everyone.

I use the datastax online langflow UI, it is really useful when working same project with different PCs.

Anyway, I try to build a simple RAG flow, using the provided template. In previous versions of langflow, this was extremelly easy. Now, for some reason I am fighting with the components to make them work.

So, with the RAG template, I use the Astra DB vector component. Alhough the data load flow works, and I can check in datastax the precense of the data in the database and the collection, when I use a duplicate of the Astra DB component in the retriever flow, I get the error:

Error Building Flow - Cannot convert undefined or null to object

[dosubot[bot]]

Hello @SuperAlkis! I'm here to help you with any bugs or questions you might have while waiting for a human maintainer. If you need assistance, feel free to ask!

I found a similar unsolved discussion that might be relevant to your issue: AstraDB Component is running successfully but not populating database, which was last updated on February 26, 2025 ^[1].

Regarding the error "Cannot convert undefined or null to object," while I couldn't find specific causes for this error in the context of Langflow, it might be related to configuration issues with the Astra DB component. Ensure that all required fields, such as the Astra DB token, API endpoint, and other configuration parameters, are correctly set up in the retriever flow. Additionally, reviewing the logs and debug information provided by Langflow could help diagnose the issue, as the loguru logger is used to log various debug messages throughout the AstraVectorStoreComponent class ^[2].

To continue talking to Dosu, mention @dosu.

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