I have a question. If the device is opened for the first time, there is a good chance that the page will not load css (js), or if the js file is not downloaded, the page will be blank, refreshed or entered for the second time. Why

I clear the cache and it"s easy to reproduce it. Generally speaking, either the bulid file or css doesn"t come down. I think it has nothing to do with the network speed. This happens no matter what device it is