title: Openpyxl TypeError: Value must be a sequence when trying to load existing workbook
body: <p>This used to work but doesn't anymore. Openpyxl version 3.0.5</p>
  <pre><code>import csv, traceback, openpyxl,re, glob, datetime, calendar, os
  from imbox import Imbox
  
  os.chdir('c:\\users\\sariz\\onedrive\\desktop')
  wb = openpyxl.load_workbook('budget sheet.xlsx')
  </code></pre>
  <pre><code>Output: TypeError: Value must be a
  sequence at the 95 (the final line here)
  </code></pre>
  <p>This an example of a sheet that is outputted by the program from when it worked:</p>
  <p><img src="https://i.stack.imgur.com/g6UaA.png" alt="[sheet demo example]" /></p>