DLNA is not working

Hi ...
I can see the Server everywhere and I can Browse the Folders, can see playlist .... but can not play any tracks at different devices.
Thats the log
[31.03.18 13:14:33 MESZ]
INFO
FolderBasedContentDirectory
UPnP request - objectId: 0, browseFlag: BrowseDirectChildren, filter: *, firstResult: 0, maxResults: 50
[31.03.18 13:14:35 MESZ]
and so on and so on .....
Any Ideas?
TIA
Heinz
I can see the Server everywhere and I can Browse the Folders, can see playlist .... but can not play any tracks at different devices.
Thats the log
[31.03.18 13:14:33 MESZ]
INFO
FolderBasedContentDirectory
UPnP request - objectId: 0, browseFlag: BrowseDirectChildren, filter: *, firstResult: 0, maxResults: 50
[31.03.18 13:14:35 MESZ]
and so on and so on .....
Any Ideas?
TIA
Heinz