NoMethodError: undefined method `length' for Spreadsheet::Workbook
spreadsheet_file = StringIO.new
data.write(spreadsheet_file)
attachments['HelloWorld.xls'] = spreadsheet_file.readNoMethodError: undefined method `length' for Spreadsheet::Workbook
spreadsheet_file = StringIO.new
data.write(spreadsheet_file)
attachments['HelloWorld.xls'] = spreadsheet_file.readCopyright © 2021 Codeinu
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