Thanks willemd !!
I'll have a look to go back to a previous version.
Regards

Hello, I ran Domoticz on a Raspberry Pi model 1 B+ for some years but after upgrading at beginning of this year (the upgrade was suggested on the web site), I get now error message after status command (service domoticz status): janv. 20 09:51:55 raspberrypi domoticz {335] Illegal instruction ...