WP+LightningとPHP7

WP+Lightningでサイト作成中[初心者]
PHP Compatibility Chekerにて
PHP7とプラグインの互換性をチェックした所...

FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
-------------------------------------------------------------------------------
1 | WARNING | No PHP code was found in this file and short open tags are not allowed by this install of PHP. This file may be using short open tags but PHP does not allow them.
-------------------------------------------------------------------------------
だと...

どうしたものか...