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.

Also I cleand the cache, changed the brower, re-start the laptop, but it still exists.

In addition, I can also see two unexpected pngs on the browser/content.js(no idea what it is)
chrome-extension://pnhojlpkdnfhikpofiijpojgpejkdgpj/images/icon48.png
chrome-extension://pnhojlpkdnfhikpofiijpojgpejkdgpj/images/cross_32.png

I don’t think I have such img in my codes.Besides the undefined value that stopped me processing my data, my timer is also very messy while both work in other computer…