I am trying to use Reactive OutsystemsUi Dark Mode  from Forge:

Enable Dark Mode on your app  just calling a client action, trying to activate or deactivate dark theme.

I apply the JS script, imported the css file to resources, created  the client variable, the action to a button inside a block from a screen.

I changed the js script to print to console:

...

function appendDarkThemeCSSFile(){

    console.log('func appendDarkThemeCSSFile(): ');

    // source: https://www.geeksforgeeks.org/how-to-load-css-files-using-javascript/

    // Get HTML head element 

    var head = document.getElementsByTagName('HEAD')[0];  

     console.log('func appendDarkThemeCSSFile(): ' + head);

    // Create new link Element 

    var link = document.createElement('link'); 

     console.log('func appendDarkThemeCSSFile(): ' + link);

    // set the attributes for link element  

    link.rel = 'stylesheet';  

    link.id = 'DarkThemeLink';

    link.type = 'text/css'; 

    link.href = 'IndependentApp1_UI/css/DarkTheme.css';  

     console.log('func appendDarkThemeCSSFile(): link ' + link);

    // Append link element to HTML head 

    head.appendChild(link);

}

Realy dont know if is an html link construction error or acess problem the error 

Refused to apply style from 'https://filipe-caldeira81.outsystemscloud.com/IndependentApp1_UI/IndependentApp1_UI/css/DarkTheme.css' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled.

This happened to anyone?

Thanks