Komento 3.1.2, EasyBlog 5.2.7 and EasyArticles 1.1.3 Released

I had Easydiscuss version 3.2 and today upgraded to 4 successfully!
In back-end everything's good but in Front-end I face with this error :

Unknown column 'private' in 'where clause'

I attached the error page also.
Any idea what's wrong?
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