- Is it happening for all excel files? can you create a file and check please
- Looks like its a dowloaded excel from internet whcih is formatted as JSON. That can be the reason of this issue
- Just to confirm as we are not seeing such change in latest version can you do a dt.rowscount. if the count says 1 then whole data is read into row 1 and column1 as a json because of the way the data is represented
cheers