Failed requests explain themselves in plain language
When something fails in the dashboard, the message you see is a plain sentence about what went wrong, including a clear one for uploads that are too large.
When something failed in the dashboard, the notification sometimes showed a block of code instead of an explanation. You knew something had gone wrong and nothing else.
Failures now say what happened, in a sentence. A file over the size limit tells you the upload is too large, and any other failure that comes back without a reason gets a plain sentence for its kind, such as a missing permission or too many requests.