I'm generating large Excel files, in xlsx format. The files contain 100+ thousand rows, with 100+ columns.
When I open one of the files, I get this: "Replaced Part: /xl/worksheets/sheet1.xml part with XML error. Undeclared entity. Line 23350, column 3794."
I'll be going through the input data to try to find the problem, but I'm wondering if there's a better, faster, easier way to figure out what Excel doesn't like about this file.