ulimit: error setting limit with RoonBridge

Installed RoonBridge on an Odroid C2 from dietpi optimised software list but after post installation reboot, RoonBridge is not running

systemctl status roonbridge -l from SSH produces the following:

root@DietPi:~# systemctl status roonbridge -l
● roonbridge.service - Roon Bridge
Loaded: loaded (/etc/systemd/system/roonbridge.service; disabled; vendor preset: enabled)
Active: active (running) since Fri 2018-08-10 03:32:39 BST; 28s ago
Main PID: 921 (start.sh)
CGroup: /system.slice/roonbridge.service
├─ 921 /bin/sh /etc/roonbridge/start.sh
├─ 925 RoonBridge --debug --gc=sgen --server RoonBridge.exe
├─1182 RoonBridgeHelper --debug --gc=sgen --server RoonBridgeHelper.exe
├─1189 /etc/roonbridge/Bridge/processreaper 1182
└─1199 RAATServer --debug --gc=sgen --server RAATServer.exe

Aug 10 03:32:39 DietPi systemd[1]: Started Roon Bridge.
Aug 10 03:32:39 DietPi start.sh[921]: /etc/roonbridge/Bridge/RoonBridge: 40: ulimit: error setting limit (Operation not permitted)
Aug 10 03:32:41 DietPi start.sh[921]: 00:00:00.006 Trace: [childprocess] using unix child process
Aug 10 03:32:41 DietPi start.sh[921]: Initializing
Aug 10 03:32:41 DietPi start.sh[921]: 00:00:00.253 Info: Starting /etc/roonbridge/Bridge/RoonBridgeHelper
Aug 10 03:32:41 DietPi start.sh[921]: 00:00:00.267 Info: ConnectOrStartAndWaitForExit RAATServer
Aug 10 03:32:41 DietPi start.sh[921]: /etc/roonbridge/Bridge/RoonBridgeHelper: 40: ulimit: error setting limit (Operation not permitted)
Aug 10 03:32:41 DietPi start.sh[921]: Not Running (.o)
Aug 10 03:32:42 DietPi start.sh[921]: Running
Aug 10 03:32:42 DietPi start.sh[921]: /etc/roonbridge/Bridge/RAATServer: 40: ulimit: error setting limit (Operation not permitted)

I’ve tried apt-get update but the problem remains. Any suggestions?

Thanks