Drag&drop folders(directories) into multi file upload raise a File upload failed - [undefined] undefined notification. It seems that some upload functions are trying to do something that are unable to. Then the error appears.

Steps to Reproduce

-go to ezplatform landing page
-Drag&Drop a folder into multi file upload area

a File upload failed - [undefined] undefined notification is raised

If this is the expected behavior, then this issue is invalid. In that case, please close it as invalid.