File error data may have been lost:
Problem:
File error: data may have been lost.
Solution:
You can see this error when you are creating excel file using apache poi. The below line may cause this error,
sheet.setColumnWidth(300,300);
Reduce the width values to 250,250
sheet.setColumnWidth(250,250);
If you still facing the issue, comment the above line and see.
Please post if you have any other solution for the above problem.