Fatal error after upgrading to latest Buddypress version 2.2.3.1

<?php

/* Restrict email messages content to non paying members */
if ( ! function_exists('kleo_pmpro_restrict_pm_email_content')) {
    function kleo_pmpro_restrict_pm_email_content($email_content, $sender_name, $subject, $content, $message_link, $settings_link, $ud)
    {

        $restrict_message = false;
        $restrict_options = kleo_memberships();
        $area = 'pm';

        if (pmpro_getMembershipLevelForUser($ud->ID)) {
            $current_level_obj = pmpro_getMembershipLevelForUser($ud->ID);
            $current_level = $current_level_obj->ID;

            //if restrict my level
            if ($restrict_options[$area]['type'] == 2 && isset($restrict_options[$area]['levels']) && is_array($restrict_options[$area]['levels']) && !empty($restrict_options[$area]['levels']) && in_array($current_level, $restrict_options[$area]['levels'])) {
                $restrict_message = true;
            }

        //not a member
        } else {
            if ($restrict_options[$area]['type'] == 2 && isset($restrict_options[$area]['not_member']) && $restrict_options[$area]['not_member'] == 1) {
                $restrict_message = true;
            }
        }

        if ($restrict_message) {

            $content = 'The message is not visible for you at the moment. Only members can view and send messages. Please log in and choose one of our memberships. Thank you!';
            $email_content = sprintf(__(
                '%1$s sent you a new message:

Subject: %2$s

"%3$s"

To view and read your messages please log in and visit: %4$s

---------------------
', 'buddypress'), $sender_name, $subject, $content, $message_link);

            // Only show the disable notifications line if the settings component is enabled
            if (bp_is_active('settings')) {
                $email_content .= sprintf(__('To disable these notifications, please log in and go to: %s', 'buddypress'), $settings_link);
            }

            return $email_content;
        }

        return $email_content;

    }
}
add_filter( 'messages_notification_new_message_message', 'kleo_pmpro_restrict_pm_email_content', 11, 7 );

//Minify
add_filter('bwp_minify_style_ignore', 'exclude_my_css');

function exclude_my_css($excluded)
{
    $excluded = array('app','foundation','foundation-responsive');
    return $excluded;
}

function remove_public_message_button() {
remove_filter( 'bp_member_header_actions','bp_send_public_message_button', 20);
 
}
add_action( 'bp_member_header_actions', 'remove_public_message_button' );

/**
 * @package WordPress
 * @subpackage Sweetdate
 * @author SeventhQueen <themesupport@seventhqueen.com>
 * @since Sweetdate 1.0
 */

/**
 * Sweetdate Child Theme Functions
 * Add extra code or replace existing functions
*/

 add_filter( 'bp_get_message_thread_excerpt', 'kleo_custom_message_length');
function kleo_custom_message_length($text) {
return substr( $text,0 , 6 );
}
//Hide members without avatars 
add_action( 'bp_core_delete_existing_avatar', 'log_avatar_deleted' );
add_action( 'xprofile_avatar_uploaded', 'log_avatar_uploaded' );

//on new avatar upload, record it to user meta
function log_avatar_uploaded(){
	update_user_meta(bp_loggedin_user_id(), 'has_avatar', 1);
}

//on delete avatar, delete it from user meta
function log_avatar_deleted($args){
	if($args['object']!='user')
	return;
	//we are sure it was user avatar delete
	//remove the log from user meta
	delete_user_meta(bp_loggedin_user_id(), 'has_avatar');
}

function modify_loop_and_pag($qs, $object=false) {
	global $wpdb;
	$include = '';

	if( $object != 'members' )//hide for members only
	return $qs;
	
	$subscribers = $wpdb->get_results("SELECT user_id FROM {$wpdb->usermeta } WHERE meta_key='has_avatar'" , ARRAY_N );
	foreach($subscribers as $subscriber){
		$include = $include . "," . $subscriber[0];
	}

 $args = wp_parse_args( $qs );
 
 //check if we are listing friends?, do not apply in this case

 
 if( !empty( $args['include'] ) ) {
	$args['include'] = $args['include'] . ',' . $include;
 }
 else {
	$args['include'] = $include;
 }
 
 $qs = build_query($args);

 return $qs;
 
}
add_action( 'bp_ajax_querystring' , 'modify_loop_and_pag', 25, 2 );

function current_user_has_avatar($id) {
	global $bp;
	if ( bp_core_fetch_avatar( array( 'item_id' => $id, 'no_grav' => true,'html'=> false ) ) != bp_core_avatar_default( 'local' ) ) {
		return true;
	}
	return false;
}

// ATTENTION
// This code should be deleted after first site load with the code
//
function init_avatar_meta(){
	global $wpdb;
	$ids=$wpdb->get_col("SELECT ID FROM $wpdb->users");//we don't need to check for meta value anyway
	foreach( $ids as $id ){
		if( current_user_has_avatar($id) ){
			update_user_meta( $id, 'has_avatar', 1 );
		} else {
			delete_user_meta( $id, 'has_avatar' );
		}
	}
}
add_action('init', 'init_avatar_meta');  
?>