A bookmark is a saved shortcut that directs your browser to a specific webpage. It stores the title, URL, and fav folder of the corresponding page. Saving bookmarks allows you to easily access your favorite locations on the Web
As the folder name should be unique, and the value for folder name are kept as primary key, when user tried to enter the folder name same as it exists the error was raised. but now it is solved
Step to reproduce:
Environment: Windows 10 Google Chrome Version 90.0.4430.93