Describes the cause and action for error messages.
Error Message(English)：
unable to unhide hidden rows
Unhide the first column or row in a worksheet - Excel
https://support.office.com/en-us/article/unhide-the-first-column-or-row-in-a-worksheet-d6b47608-80ee・・・
Fix: Microsoft Excel hidden rows won't unhide - YouTube
https://www.youtube.com/watch?v=278Nuyq8cdQ
https://www.youtube.com/watch?v=278Nuyq8cdQ
Unable to Unhide Columns or Rows in Excel | A4 Accounting
https://a4accounting.com.au/unable-to-unhide-columns-or-rows-in-excel/
microsoft excel 2007 - Unhide row doesn't work - Super User
https://superuser.com/questions/479579/unhide-row-doesnt-work
microsoft excel - Allowing users to unhide ...
https://superuser.com/questions/702030/allowing-users-to-unhide-format-only-chosen-columns
password protection - How to avoid hidden ...
https://superuser.com/questions/609340/how-to-avoid-hidden-excel-rows-columns-being-read
How to hide and unhide rows in Excel - Ablebits.com
https://www.ablebits.com/office-addins-blog/2017/11/29/hide-unhide-rows-excel/
How to Unhide Columns and Rows in Excel + Hide Them [2019]
https://spreadsheeto.com/hide-unhide/