Rich Text Markdown - Not able to import css

I’m using Rich Text Markdown editor with angular. I’m not able to import css.

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Error :

ERROR in D:/Framework/UX-Framework/libs/ux-demo/src/lib/apps/notification/notification.component.scss
Module build failed (from D:/Framework/UX-Framework/node_modules/sass-loader/dist/cjs.js):
SassError: Can’t find stylesheet to import.

1 │ @import ‘~/dhx-richtext/codebase//richtext.css’;
│ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Please, make sure that the location to the cee file is defined correctly.
IF rthe problem still occurs for you please, provide a complete demo, where the problem can be reproduced locally.