Solid icons failed to load

I bought Figma file icons, can i use solid icons for free? I mean here https://www.untitledui.com/resources/icons or should buy another license for this?

<img width="1544" height="1170" alt="Image" src="https://github.com/user-attachments/assets/d7bb4ceb-9fa3-4c39-9e1b-c42083351e76" />