$user = apply_filters( 'bp_core_activate_account', bp_core_activate_signup( $key ) );
 error_log (" error activte : ".var_dump($user->errors));
    // If there were errors, add a message and redirect.
    if ( ! empty( $user->errors ) ) {
        bp_core_add_message( $user->get_error_message(), 'error' );
        bp_core_redirect( trailingslashit( bp_get_root_domain() . '/' . $bp->pages->activate->slug ) );
    }

    bp_core_add_message( __( 'Your account is now active!', 'buddypress' ) );
    bp_core_redirect( add_query_arg( 'activated', '1', bp_get_activation_page() ) );

}