Where is the Rainloop data folder

NethServer Version: 7.7.1908
Module: nextcloud/rainloop

As the problem
[No Nethserver email via Nextcloud Mail app]
is still present I´m trying rainloop within nextcloud to access my mails.

I found the admin interface of rainloop and logged in. The I get the message


RainLoop data folder is accessible. Please configure your web server to hide the data folder from external access.

Can anybody tell me where I can find this folder in the filesystem…


How did you install the rainloop software ?

It´s the nextcloud app…

don’t know…probably bundled inside /usr/share/nextcloud/apps/