Drag and drop of folder is not working in internet explorer 11

[alexgiovi]

In Internet Explorer 11. 48.17134.0, when I'm trying to drag and drop a folder from my desktop inside elfinder, I receive an error message, this error doesn't happen when I'm using other browsers (Firefox, Edge, Chrome).
I've been trying with single files or with a selection of multiple files, and this errore message isn't displayed, it only happens when I'm dragging a folder.
I've tryed in your installation: (https://studio-42.github.io/elFinder/#elf_l2_Lw)

Drag and Drop image

Error Message image

[nao-pon]

@alexgiovi IE 11 does not support folder uploading. I will modify it so that I issue the appropriate error message.