Other problem : I must reboot to restart owserver service
sudo service owserver restart
Job for owserver.service failed because the control process exited with error code.
See "systemctl status owserver.service" and "journalctl -xe" for details.
systemctl status owserver.service
* owserver.service - Backend server for 1-wire control
Loaded: loaded (/lib/systemd/system/owserver.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Wed 2021-07-07 22:16:54 CEST; 10s ago
Docs: man:owserver(1)
Process: 15558 ExecStart=/usr/bin/owserver -c /etc/owfs.conf (code=exited, status=1/FAILURE)
Main PID: 15558 (code=exited, status=1/FAILURE)
juil. 07 22:16:54 domoticz systemd[1]: owserver.service: Failed with result 'exit-code'.
juil. 07 22:16:54 domoticz systemd[1]: Failed to start Backend server for 1-wire control.
juil. 07 22:16:54 domoticz systemd[1]: owserver.service: Service RestartSec=100ms expired, scheduling restart.
juil. 07 22:16:54 domoticz systemd[1]: owserver.service: Scheduled restart job, restart counter is at 5.
juil. 07 22:16:54 domoticz systemd[1]: Stopped Backend server for 1-wire control.
juil. 07 22:16:54 domoticz systemd[1]: owserver.service: Start request repeated too quickly.
juil. 07 22:16:54 domoticz systemd[1]: owserver.service: Failed with result 'exit-code'.
juil. 07 22:16:54 domoticz systemd[1]: Failed to start Backend server for 1-wire control.