[FIXED]Can't use other fonts in Unity

When I add new fonts to my project, I can’t use them and when I try to open them, I get this error message:

This is what my External Tools looks like (I assume that’s what that error is referring to)

I am using the latest version of unity

Any help appreciated!

I was using TMPro in my project, I don’t know if that was the cause of the problem.

So, I was able to find a solution to this problem quite soon after making this post, so I decided to post this reply in case someone will have this same problem.

Select your font → Click the little button as shown in the photo above to "Create TMP Font Asset

After that, click “Generate Font Atlas” and save, you should now be able to use the font normally.