This is good.
So usually, the error is in the lastError.response. But, in case the error itself is in JSON, it gets converted to this format.
This is practially impossible for Wappler to predict. From the looks of it, you are getting this error from some thrid-party API. So its on you to configure this correctly.
When talking about status codes, like 401,403 etc… the response is usually plain text, and not a JSON. Hence, Wappler has put in simple handling to show the plain text inside lastError.response.
So, in this specific case, you need to handle the different response style.