Describes the cause and action for error messages.
Error Message(English)：
microsoft excel does not display spreadsheet
Fix: Excel data not showing - Excel worksheet area is grayed out ...
https://www.repairwin.com/fix-excel-data-not-showing-excel-sheet-area-is-grayed-out-blank/
No Worksheet Appears in Microsoft Excel - Office Articles
https://www.officearticles.com/excel/no_worksheet_appears_in_microsoft_excel.htm
Where are my worksheet tabs? - Excel - Office Support - Office 365
https://support.office.com/en-ie/article/where-are-my-worksheet-tabs-42623d50-2f9b-4583-ad9c-f1b3811・・・
Microsoft Excel opens saved Excel file as a blank workbook
https://www.computerhope.com/issues/ch001123.htm
Fix Excel 2016 opening a blank document - gHacks Tech News
https://www.ghacks.net/2017/11/30/fix-excel-2016-opening-a-blank-document/
What To Do When Worksheet Tabs Go Missing | AccountingWEB
https://www.accountingweb.com/technology/excel/what-to-do-when-worksheet-tabs-go-missing
Lesson 1: Entering Text and Numbers
http://math-info.criced.tsukuba.ac.jp/elearningbih/informatics/excel/excel_lesson1.htm
How to Show Formulas in Excel: Display Cell Formulas In 2 Clicks
https://spreadsheeto.com/show-formulas/
8 Excel Error Messages You're Sick of Seeing (And How to Fix Them)
https://blog.hubspot.com/marketing/common-excel-error-messages