Setting Route break the page

I'm following the statamic tutorial in the Youtube where it show that putting '/blog/{slug}' on the route field in the collection configuration. But it broke the page as now the link such as CSS, JS, Image try to fetch from 'localhost/blog/js/app.js' instead of 'localhost/js/app.js'

Answered by muhammad zunnur!
>>>>>>> Answered <<<<<<<
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