Unable to upload answer csv file
One possible reason why a CSV file cannot be uploaded is that the save format differs depending on the Excel version.
If the save format is not appropriate, all values may be stored in column A as comma-separated values, and the data format will not be recognized correctly, resulting in an error during upload.
If you are unable to upload the file even though the data itself is correct, please check and change the save format of the file by following the steps below.
Open the relevant file.
Select column A.
Go to the “Data” tab.
Click “Text to Columns.”
Select “Delimited - Characters such as commas or tabs separate each field,” then click “Next.”
Check “Tab,” then click “Next.”
Click “Finish.”
Save the file.
After completing the above steps, try uploading the file again.