Cannot use a scalar value

Thanks, that’s all really helpful.

Are you able to help me fix this?

To save me lots of testing, are you able to edit a file if I tell you which one (essentially I just need to add a line and see if the error goes away) . Don’t worry is that makes no sense – but on the chance that you know how to edit files, that would be great.

ideally I’d like you to do the following

wp-content/plugins/bbp-private-groups/includes/functions.php

edit this to add a line

so existing line 580-582 is

$groups = get_post_meta( $forum_id, '_private_group', false );
	//so now we know which forum it is in - now we need to know if user has access to any groups of this forum  - so we get the groups this user has
	$check=get_user_meta( $user_id, 'private_group',true);

and could you add a line to make this

$groups = get_post_meta( $forum_id, '_private_group', false );
	$valuecheck = array();
	//so now we know which forum it is in - now we need to know if user has access to any groups of this forum  - so we get the groups this user has
	$check=get_user_meta( $user_id, 'private_group',true);

If you don’t know how to do this, please come back – I do not wish for you to try something you are not comfortable with !

Otherwise then let me know if this clears the error

permanent fix in 3.2.6