MinimServer not starting

[mminga]

I have an issue with my server.
Armbinan on a Tinkerboard
It run at least last week.

minimserver-out.log

Code:

MinimServer: class not found: org.jminim.core.LauncherImpl

minimserver-display.env

Code:

USER=user
LANGUAGE=de_DE.UTF-8
XDG_SESSION_TYPE=x11
SSH_AGENT_PID=3033
HOME=/home/minganoise
DESKTOP_SESSION=xfce
PANEL_GDK_CORE_DEVICE_EVENTS=0
GTK_MODULES=gail:atk-bridge
XRDP_PULSE_SINK_SOCKET=xrdp_chansrv_audio_out_socket_10
XRDP_PULSE_SOURCE_SOCKET=xrdp_chansrv_audio_in_socket_10
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
PULSE_SCRIPT=/etc/xrdp/pulse/default.pa
LOGNAME=minganoise
XDG_SESSION_CLASS=user
XDG_SESSION_ID=c3
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
GTK3_MODULES=xapp-gtk3-module
SESSION_MANAGER=local/volumio:@/tmp/.ICE-unix/2965,unix/volumio:/tmp/.ICE-unix/2965
XRDP_SOCKET_PATH=/run/xrdp/sockdir
XDG_RUNTIME_DIR=/run/user/1000
XDG_MENU_PREFIX=xfce-
DISPLAY=:10.0
LANG=de_DE.UTF-8
XDG_CURRENT_DESKTOP=XFCE
UID=1000
LC_MESSAGES=en_US.UTF-8
SSH_AUTH_SOCK=/tmp/ssh-XXXXXX7ljqBX/agent.2965
SHELL=/usr/bin/bash
QT_ACCESSIBILITY=1
XRDP_SESSION=1
PWD=/home/user
LC_ALL=de_DE.UTF-8
XDG_DATA_DIRS=/usr/share/xfce4:/usr/share/gnome:/usr/local/share:/usr/share:/var/lib/snapd/desktop:/usr/share
XDG_CONFIG_DIRS=/etc/xdg

Attached the log from yesterday.