I can't insert any record after I created a Table in Base

Hi I can’t inset any record after I created a Table in Base. The “Insert Record” is grey color when I clicked the menu bar. The OS of my PC is Win 10 Pro (x64) and version is 20H2. The LibreOffice version is 7.1.12(x86). Please advise what’s wrong of my LibreOffice. Thank you so much!

Your table have a primary key?

menu:tools>SQL…

ALTER TABLE "YOUR_TABLE" ADD COLUMN "ID" INTEGER IDENTITY

with your actual table name
menu:View>Refresh Tables

Try again.

Yes, I set the primary key already

Upload the database document, please.

Thank you but It doesn’t work

sorry, how can I upload the file?