Which font(s) are you getting the error for?
If you have tried to package files which use Typekit fonts, you'll find they can't be packaged. You can create PDF, DPS or EPUB projects with Typekit fonts. You can share the project with another Creative Cloud or Typekit member and they can download the fonts (easily in InDesign CC 9.2+).
For your kind attention. I have solved that problem, actually this was created because of using the non-purchased fonts. I simply changed the fonts and tried again. And it did rightly.