How to Access Server Connect "Unauthorized" Error Message When lastError.Response is [Object, Object]

I have a server connect which I expect sometimes to return unauthorized. Here is how it looks when it does this:

unauth854×269 38.9 KB

How can I access the text of the field “message” shown here within Wappler?

I’ve tried these options:

manage_activity_payment_intent.data.error.message (is empty string)
lastError.response (is" object object")
lastError.message (just says “Unauthorized”)
lastError.status (is" 401")

Thanks!
Antony.