[Bug] Group `ubuntu` does not exist, causing a boot-time startup to not work

[andy31415]

Describe the bug

Startup fails with matter-th.service: Failed to determine group credentials: No such process (when checked via systemctl status matter-th.service)

Steps to reproduce the behavior

• Install on a fresh RPI5 with ubuntu 24.04.
• service does not start after boot

Service can be manually started

Expected behavior

Boot time startup

Log files

$ systemctl status matter-th.service
Warning: The unit file, source configuration file or drop-ins of matter-th.service changed on disk. Run 'systemctl daemon-reload' to reload units.
× matter-th.service - Matter Test Harness
     Loaded: loaded (/etc/systemd/system/matter-th.service; enabled; preset: enabled)
     Active: failed (Result: exit-code) since Fri 2024-08-09 19:03:49 UTC; 31min ago
   Main PID: 841 (code=exited, status=216/GROUP)
        CPU: 9ms

Aug 09 19:03:49 harnesspi systemd[1]: Starting matter-th.service - Matter Test Harness...
Aug 09 19:03:49 harnesspi (start.sh)[841]: matter-th.service: Failed to determine group credentials: No such process
Aug 09 19:03:49 harnesspi systemd[1]: matter-th.service: Main process exited, code=exited, status=216/GROUP
Aug 09 19:03:49 harnesspi systemd[1]: matter-th.service: Failed with result 'exit-code'.
Aug 09 19:03:49 harnesspi systemd[1]: Failed to start matter-th.service - Matter Test Harness.

PICS file

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Screenshots

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Environment

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Additional Information

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