Error opening a spreadsheet created by this gem about spreadsheet

[Ramyani-QI]

1. Yes tried that solution and the error is reproducible.
   Error:
   Unkown BIFF_VERSION ''
   spreadsheet-1.2.9/lib/spreadsheet/excel/workbook.rb:59:in `block in biff_version'
2. Using jruby-9.2.18.0
3. I had created the file test.xls using the same spreadsheet script only
4. test.xls

[zdavatz]

Can you try with Ruby 3.0.0?

[Ramyani-QI]

I have tried with ruby-3.0.0 but getting same error
Error:
Unkown BIFF_VERSION ''
spreadsheet-1.2.9/lib/spreadsheet/excel/workbook.rb:59:in `block in biff_version'

[zdavatz]

1. Did you try this solution: #138 (comment)?
2. Which version of Ruby are you using?
3. Which software created the Original file?
4. Can you attach the file, that you are trying to open?

[zdavatz]

Ok, this should work now. Please let me know if you experience further problems.