Vue 404 error, GitHub page blank after deploy:" Failed to load resource" such as css and js files

Hi everyone.
I deployed my vue app on branch “git-pages”, used instructions from vue’s website, but got error 404 :can’t download my css, and js files.
Then I deployed dist folder on “master branch” and used path :"… And The result was the same (
Does anyone know what I did wrong?
Solutions that I found in another websites, I can’t understand (