EMQX not loading

I am working with EMQX, and most of the time, the add-on does not load on the page. It is started, the load is not too much, but it just hangs with a blank page. After sometimes up to 5 to 10 tries, it loads and I can see the page.
Is this something anyone has seen? any fix?
Here is the load and the log:

Logs: