JSON Object returned with error from LARAVEL API not readable in Nodejs - development

JSON Object returned with error from LARAVEL API not readable in Nodejs

I am using Laravel apis for my project. The API is working fine when I use curl to access it.

curl -H "Content-Type: application/json" -X POST -d '{"username":"xyz","password":"xyz", "filterZip":"123123"}' http://localhost:8080/api/signup {"error":{"message":"User with specified email address already started sign up process, but did not finished it. Please sign in regulary to continue sign up process.","errorCode":"020102"}}

However when I call if from nodejs app. I am unable to access the error Json Object from the response.

From Nodejs I am calling my laravel API

fetch(API_URI + '/signup', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify(requestBody)
    })

On the Laravel API end following code is used to return response.

public function respondError($errorId, $statusCode, $message = 'Unknown') {
        $this->setHttpStatusCode($statusCode);
        $errorCode = ErrorHelper::generateErrorCode($this->controllerErrorId, $this->methodErrorId, $errorId);
        if (API_LOG_ERROR_CODES) { ErrorHelper::logErrorCode($errorCode, $message); }

        return $this->respond([
            'error' => [
                'message' => $message,
                'errorCode' => $errorCode
                ]
        ]);
    }

public function respond($dataForJson, $headers = []) {

        return response()->json($dataForJson, $this->getHttpStatusCode(), $headers);
    }

from Laravel Questions and Answers https://laravelquestions.com/php/json-object-returned-with-error-from-laravel-api-not-readable-in-nodejs/
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