Why this key already in lacoleStorage

Hello, I appeal to your talents, I am under window and with the fireFox console I have a key which is saved directly in the localeStorage and which bothers me. Does anyone know where this is coming from or has had this problem before?
why does localStorage redirect me to this address to process the data?

we can’t really know, it depends what you did on your localhost
This might be from a previous project you worked on, as localStorage data persist until you clear it, via the DevTools panel or localStorage.clear()

I think it’s also possible that some add-ons might write to local storage, although this is risky if the page can manipulate it.