The theme folder/directory should be ‘trusted-pro‘ NOT ‘trusted-pro-b‘.
It looks like maybe you have renamed the theme’s folder or copied it to another folder (as a backup??) and forgot to copy the ‘trusted-fonts.php’ file.
If you have two instances of the theme installed – ‘trusted-pro’ and ‘trusted-pro-b’ – but they have the same theme name ‘Trusted Pro’ make sure that you are clicking the correct one when trying to activate it.