会員登録 + 閲覧情報の試用版をサーバーにアップロードにアップロードしました。そして、管理画面の「CSV出力」を押すと、CSVファイルがダウンロードされるのではなく、文字化けしたデータがブラウザで表示されてしまいます。EdgeとFirefoxのどちらでもダウンロードできません。他のCMSの試用版では正常にダウンロードできますが、こちらのCMSのみが下記の文字化けが表示されてしまいます。
また、デモサイト（https://q19cms.com/freedemo/portal_member_demo/?act=item1）やサーバーにアップロードに試用版の上部に「NULL」が表示されてしまいますが、こちらは消せませんか？

NULL

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