in reply to
Re^2: Problem with Spreadsheet::XLSX..
in thread Problem with Spreadsheet::XLSX..
I linked to various educative nodes. Please read them and apply their contents to your situation.
If you have no system administrator to talk to about the architecture and operating system, this is even more reason to use your own version of Perl and/or your own Perl library instead of using the libraries provided by the operating system. You will have to learn about the operating system you are working on. I cannot help you there.