onError method
Called when an exception was occurred during the request.
Implementation
@override
void onError(DioException err, ErrorInterceptorHandler handler) {
FS.networkEvent(
url: err.requestOptions.uri.toString(),
statusCode: err.response?.statusCode,
method: err.requestOptions.method,
requestSize: computeRequestSize(err.requestOptions),
responseSize: computeResponseSize(err.response),
durationMs: _durationOf(err.requestOptions),
);
super.onError(err, handler);
}