Should xrdp work with Excalibur xfce?

Connecting from Windows Remote Desktop Client there is only an empty Screen with the mouse cursor, after some seconds there is an error message box "Error connecting to user session"

There is no system gui, system boots into console.
https://dev1galaxy.org/viewtopic.php?id=6308

[INFO ] xrdp_wm_log_msg: sesman connect ok
[INFO ] xrdp_wm_log_msg: Performing login request for weberjn
[INFO ] xrdp_wm_log_msg: login was successful - creating session
[INFO ] xrdp_wm_log_msg: session is available on display 10 for user weberjn
[INFO ] xrdp_wm_log_msg: Connecting to session
[INFO ] loaded module 'libxup.so' ok, interface size 10416, version 4
[INFO ] lib_mod_connect: connecting via UNIX socket
[ERROR] xrdp_wm_log_msg: Error connecting to user session
[INFO ] Login screen monitor height is 1080 pixels over 174 mm (157 DPI)