- check the reported error by sir Josh when uploaded the files from the merch.
- check the files from merch as uploading the file returned an error
- as per checking the files has  a column with a string value that must be number
- sir Josh return the file to merch for correction
- sir Josh tried the file again, and as per testing the application encounter and error again
- check the files again, and the files has a black space added in the files, remove the files and test the barcode again
- as per checking the cause of the error is the comma in the price column, sir Josh remove the comma and test the application again and the uploading is now successful and he successfully printed a barcode
- advise sir Josh that other user must be advised of the price column should not have a comma