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Error Handling

A common error scenario is Request failed with status code STATUS_CODE coming from AxiosError. In this case, SAP Cloud SDK for AI uses ErrorWithCause to provide more detailed error information.

Accessing Error Information​

For example, for the following nested ErrorWithCause

const rootCause = new Error('The root cause is a bug!');
const lowerLevelErrorWithCause = new ErrorWithCause(
  'Failed to call function foo().',
  rootCause
);
const upperLevelErrorWithCause = new ErrorWithCause(
  'Process crashed.',
  lowerLevelErrorWithCause
);
throw upperLevelErrorWithCause;

The error stack will look like this:

ErrorWithCause: Process crashed.
    at ...
Caused by:
ErrorWithCause: Failed to call function foo().
    at ...
Caused by:
Error: The root cause is a bug!
    at ...
  • error.stack will contain the above stack trace.
  • error.message will be Process crashed..
  • error.cause.message will be Failed to call function foo()..
  • error.rootCause.message will be The root cause is a bug!.

In case of AxiosError, the response data will be part of the error stack and can be accessed via error.cause.response.data.