No feedback when creating two folders with same url

Steps to reproduce:
Create one folder with the name e.g. 'test1'. Then create another folder with the same name. Verify that the generated url is the same as the url of the previous created folder.

Observed result:
Both folders are created successfully, no error or feedback is being displayed that both folders share the same url.

Expected result:
It's unclear to the user which url is being used for which folder. This can be resolved by displaying a message/error to the user after creating a folder with an already used url.