We should have been able to delete the folders by long pressing and clicking on delete.
When we add folders from notebook and long press on a folder to delete the folder,the app crashes.
Open the application and click on "settings"
Click on "files and folders"
A notebook option will appear, click on the notebook option
Add any folder select the root folder and click select
Return to homepage and long press on a folder to select it
Click on delete option and the application will crash.