fix(apisix-standalone): debug log when requests fail #359
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Description
Since Axios will directly throw errors, when a request fails (e.g., 400 Bad Request), the tap will not trigger and instead directly enter the catchError. This prevents request and response body information used for debugging from being logged.
The underlying reason is that rxjs tap does not subscribe to rxjs error. Therefore, once the stream data source directly throws an error, it will enter the first error subscriber, which is the catchError operator.
This PR ensures that debug information is printed in catchError whenever possible, even when requests fail. This applies unless the error itself is not an Axios error and the original response information cannot be obtained.
Checklist