I misused the word 'closure' in my original post. I wanted to assign the workbook to a static variable. I believe that the structure I used is a commonly idiom in Perl for making a variable static.

I never figured out why the error was occurring, but it disappeared when I explicitly called $workbook->close instead of letting the destructor handle it when the program exits. The workbook was also saved correctly.

In reply to Re^4: variable scopes in Excel::Writer::XLSX by johnrcomeau
in thread variable scopes in Excel::Writer::XLSX by johnrcomeau

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