Conflict Facebook plugin [The parameter app_id is required]

Does anyone have the same problem?

When I use Wp Socializer, my Facebook recommendation bar is not functioning properly.

It said “The parameter app_id is required”

When I disabled it, it showed again. I don’t have the same problem with other plugins (Share This)

This is my site. http://www.phattriencanhanvn.com/30-ngay-khong-phan-nan/

Please help. As it is a serious social integration problem 🙁