1064 - You have an error in your SQL syntax at some users

Hello,
Please try to login at back end with the username given at Details.

I am receiving:

1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND state = 1' at line 1 SQL=SELECT target_id FROM wmpx9_social_friends WHERE actor_id= AND state = 1

I checked that issue at an old post here and I see that if I disable the T3 People Suggest module, it works OK.

But at your solution http://stackideas.com/forums/1064-sql-syntax-error you made a file modification.

So is it EasySocial issue or TechJoomla ?

Thanks!