アプリ/Webレコーダーにエクセルファイルがアタッチできない

ウェブブラウザへの情報入力の自動化をStudioxで試しています。
手順は以下の通りです。
①Excelファイルを使用→使用するエクセルファイルを指定
②繰り返し(Excelの各行)
③アプリ/Webレコーダーを使用してWEBブラウザ上で入力する
箇所を指定する

③において、エクセルファイルがアタッチできないというエラーが出ます。対処方法を教えていただけると助かります。
エラー

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