Frontend & browser·The network from the browser
the fetch resolved successfully but the status was 0 and the body was empty.
Opaque response
Also calledno-cors response
The result of a `no-cors` request: it was sent and may have succeeded, but the browser will not let you see the status, the headers or the body. It exists so that cross-origin resources can be fetched for use by the browser itself, as an image or a cached asset. Caching one in a service worker is a trap, because you cannot tell a successful response from a 404.