Please note that Community Document Server 0.1.13 is an app developed by Nextcloud and I guess they recently updated it. With that said, we cannot guarantee stable functioning of this app and you have to contact Nextcloud support with detailed description of the problem.
I would recommend you to install ONLYOFFICE Docs Community Edition on a dedicated server with this official guide that is fully tested and support by our team::
https://helpcenter.onlyoffice.com/installation/docs-community-index.aspx