Setting Nextcloud WebDAV as file upload storage system

Hi, i’m trying to set up a different file storage for my RocketChat server.
I followed the (very few) instructions given here : https://rocket.chat/docs/administrator-guides/file-upload/webdav/. There is a link to this page where i learned that i should give a url that looks like this https://{host}/{path}/remote.php/dav/files/{username}

That’s what i did.
I created a folder dedicated to rocketchat, i entered user id and password.

But still when i try to upload a file in a channel i get a Internal server error [500]

Did anyone report succeeding to implement this?? Any advice?

RocketChat version : 0.73.2
NextCloud version : 14.0.3

I am having the same issue, any resolution?

Webdav looks very buggy.
If you turn on integration and connects nextcloud user then this user will be able to hang whole server by uploading something big. A 100mb file is enough.