wordpress-froala-wysiwyg VS angular-froala

Getting started with the best WYSIWYG WordPress editor is relatively simple. There are actually two ways to go about the installation of Froala. Either you can use GitHub to download it manually or you can just add it as a WordPress admin. We will go through both procedures in this post. In order to download it manually, you just need to head over to Froala’s GitHub repo and download the contents. Then make a new folder beneath the plugins folder in your WordPress installation wizard. After this step, you can finally copy Froala to the newly created folder and enjoy it as a plugin in the WordPress admin area.

Actually I'm receiving errors like The resource from “http://localhost:8090/Sidebar/Sidebar.css” was blocked due to MIME type (“text/html”) mismatch (X-Content-Type-Options: nosniff)... Both my css and js files are gettings "text/html" on their headers and changing the http-proxy-middleware options doesn't seem to change it... On their GitHub there's an issue about it: https://github.com/chimurai/http-proxy-middleware/issues/580 ... And they say that it's a webpack issue: https://github.com/froala/angular-froala/issues/170 ... But these solutions on the second page don't work for me.