What does an XHR status code of 0 actually mean?

[JeremyBradshaw7]

We're getting many many instances like this in Sentry for our requests that we initiate through Axios:

What does the status code of [0] actually indicate? Is it a network/comms issue with the device?

[marandaneto]

It's the status_code, but it was likely not available.

[pke]

That's usually a network issue. Most likely a connection drop, connectivity problems or bad SSL pinning.
The underlying fetch implementation can't connect to the server so it defaults to HTTP status code 0.

[marandaneto]

@krystofwoldrich maybe raise an issue on the JS repo to ignore the response code in case its not available?

[pke]

This could point to a serious connection problem the app is facing, I wouldn't ignore this code.