Welcome to the Make community!
The “New Folder Location” field only accepts a folder ID.
You need to use “Search for Files/Folders” module to get the folder ID first, or manually copy the ID from the folder’s URL.
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
P.S.: Did you know, the concepts of about 70% of questions asked on this forum are already covered in the Make Academy. Investing some effort into it will save you lots of time and frustration using Make later!