It seems that something goes wrong when you create your format in $text_format and you then pass undef along to the ->write call. I don't see anything in the code of Excel::Writer::XLSX why that should happen, but maybe you find something. Maybe debugging this with Data::Dumper to see what you get in $text_format could help.

In reply to Re^3: Excel::Writer::XLSX 0 byte outfile by Corion
in thread Excel::Writer::XLSX 0 byte outfile by doc1623

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