Server Timing API – There’s undefined and unexpected png on my running browser
I got a weird issue when I was working on html, js.Below is what I got, the point is that when I sent the same code to other computer, it works well with the data, and I also got a line of “Phisherman loaded…”, which not included in my codes.
I’m not sure if this is because I have timer in my codes because I saw there’s a hint linked to Server Timing API though I haven’t connected to any API in my codes.