Describes the cause and action for error messages.
Error Message(English)：
not saving previous versions
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https://www.easeus.com/file-recovery/recover-overwritten-replaced-excel-word-document.html
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https://answers.microsoft.com/en-us/msoffice/forum/msoffice_excel-mso_other-mso_archive/how-to-recov・・・
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https://forums.tomsguide.com/threads/how-to-keep-previous-versions-of-excel-files.90103/
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https://forums.tomsguide.com/threads/microsoft-excel-didnt-recover.170331/
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http://www.repairmsexcel.com/blog/restore-excel-file-saved-over
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https://itstillworks.com/restore-excel-spreadsheet-previous-version-5927544.html
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https://www.pcworld.com/article/3072649/3-ways-to-recover-an-older-version-of-an-existing-file.html
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https://trumpexcel.com/recover-unsaved-excel-files/