Column widths (of some columns) in Openpyxl become zero after 60+ columns

Question

Given a wb with 5 worksheets, I am adding a column to each every day using openpyxl, and this has been working well. Now though, with just over 60

Answer 1

It doesn't seem to be an issue of column widths, but the columns themselves are hidden. Can you post your full code?

A workaround might be fb.column_dimensions['B'].hidden = False

Additionally, I would update to the newest version of openpyxl with pip install openpyxl