[Mr basil]

Originally Posted by kh99

Yeah, that's a minor issue with that version. You can fix it by editing the code in packages/vbforum/item, in socialgroupmessage.php and socialgroupdiscussion.php. In both cases you want to find this:

protected function getLoadQuery($required_query = null, $force_rebuild = false)

and add the '= null' (in red above).

If you have php 5.4 or later you could also upgrade to vb4.2.3 (but of course there's always a little risk with upgrading).

Here the original line:

protected function getLoadQuery($required_query = self::QUERY_BASIC, $force_rebuild = false)

I tried to replace it with your code but it give same error
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EDIT:
I found a fix for this issue in google

So in class_core.php locate lines 5683-5685

case E_NOTICE:    
        // Just ignore these completely //    
    break;

To replace it with this code

case E_NOTICE: 
       case E_STRICT;     
   case E_DEPRECATED;        
    // Just ignore these completely //  
      break;