Problem with default avatar

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

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

//Avatar default
add_filter( 'bp_core_fetch_avatar_no_grav', '__return_true' );
	function myavatar_add_default_avatar( $url )
	{
		global $bp;
		$gender = xprofile_get_field_data('Je suis', bp_get_member_user_id());
		if ($gender == "Homme") {
			return $img_url = SECU.'/wp-content/uploads/2015/08/avatarh.png';
		}
		else {
			return $img_url = SECU.'/wp-content/uploads/2015/08/avatarf.png';
		}
	}
	add_filter( 'bp_core_mysteryman_src', 'myavatar_add_default_avatar' );
	add_filter( 'bp_core_default_avatar_user', 'myavatar_add_default_avatar' );
	

//manual total members
	add_filter( 'bp_get_total_member_count', 'kleo_my_total_members' );
function kleo_my_total_members($number) {
	$number = str_replace(".","",$number);
	return 1284;
}
//manual number online members
add_filter( 'kleo_online_users_count', 'kleo_my_online_users', 10, 2);
function kleo_my_online_users($number, $value) {
	switch ($value) {
		//ALL MEMBERS ONLINE
		case FALSE:
			return '195';
			break;

		case "Woman":
			return $number+51;
			break;
		
		case "Man":
			return $number+134;
			break;
		
		
		default:
			return $number;
			break;
	}
    
}
?>