I've used the official devdoc site tutorial, for doing my own submenu page in the M2 backend. Everything is working, I see the menu slot, I can open it and have a HelloWorld showing. But the baseUrl is changing, so every M2 js and CSS file is not loading? On every M2 admin page the url is: static/version1648803400/adminhtml /Magento/backend/ en_US/requirejs/require.js On my new subpage/menu: static/version1648803400/adminhtml /_view/ en_US/requirejs/require.js What am I missing?