I first test use a xls file ，file is uploaded as a attachment.

const workbook = new ExcelJS.Workbook(); await workbook.xlsx.readFile(filePath); let worksheet = workbook.worksheets[0];

the worksheet is undefined ,

but i convert xls file to xlsx ,the above code work 。

anyone knows exceljs only work for xlsx ?

thanks for help my friends.

test.excel.xls