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Feature Description (功能描述)

When I run the demo program hugegraph_1lm.demo.rag_demo.app, I complete the LLM configuration and receive a prompt stating that it has been successfully configured. My account limit is insufficient to meet the request, so an error occurred when making the request. However, the error only told me 'str object has no attribute 'usage' ', which took me some time to discover the real reason.

Another method that is relatively easy to replicate is to try modifying the api_mase address and removing the suffix '/v1'. The application configuration still shows a success message, but an error message will be generated during runtime. The error message does not clearly indicate that there may be a configuration issue.

I hope to display the information returned by the LLM interface, whether in the log or on the frontend interface. This may help users better identify configuration issues.

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• Yes I am willing to submit a PR!

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