protected static function load_notices() {

		$notices = get_option( 'llms_admin_notices', array() );

		if ( ! is_array( $notices ) ) {
			$notices = array( $notices );
		}

		// Remove empty and non-string values.
		return array_filter(
			$notices,
			function ( $notice ) {
				return ( ! empty( $notice ) && is_string( $notice ) );
			}
		);
	}