このエラーメッセージに関する原因と対処に関して説明します。
エラーメッセージ(英語)：
string does not include
対処
関連リンク
How can I check that a string does not include the text of another ...stackoverflow.com/.../how-can-i-check-that-a-string-do...
https://stackoverflow.com/questions/35355920/how-can-i-check-that-a-string-does-not-include-the-text・・・
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