How can I understand response status 0

Web Performance Discuss Test Results
1

Hi Petrick,

I found lots of response status 0 after I have tested my web page.
I looks like this for a certain url: there are three or more status 0, then the code 200 appear…
My question is, how can I understand response status 0? Is it correct, or bug of wpt tool?

Best Regards,
wushi

2

Do you have a link for the actual test?

3

That looks like a reporting error of some kind. Is this happening only on a private instance or can you reproduce it on the public instance? What browser?

Thanks,

-Pat