Where to place? Place this app in **nextcloud/apps/**

Hi.
I placed Joplin Nextcloud App here: C:\Program Files\Nextcloud\nextcloud\apps\joplin
Error:

Beta: Joplin Nextcloud App status: Error Check Status [Help]

The Joplin Nextcloud App is either not installed or misconfigured. Please see the full error message below:

Unsupported WebDAV URL format: https://nextcloud03.webo.hosting/remote.php/dav/files/n.portalru@gmail.com/

joplinerror2

Thanks.