Snipsledcontrol do not work after boot

Mostly the service does not work after the boot. After the boot, LEDs are switched on briefly. But there is no reaction to the hotword.

The service is running:
ps -ef | grep Led
pi 1913 1 4 12:54 ? 00:00:02 /home/pi/snipsLedControl_v1.8-beta6/venv/bin/python3.5 main.py --hardware=matrixvoice --pattern=google

systemctl restart snipsledcontrol

fixes the problem for the moment.

I see a difference in the daemon.log Maybe this observation is helpful.

Does not work:
Jul 1 13:37:08 raspberrypi python3.5[699]: Starting Snips Led Control v. 1.8 beta
Jul 1 13:37:08 raspberrypi python3.5[699]: Initializing SnipsLedControl
Jul 1 13:37:08 raspberrypi python3.5[699]: Loading configurations
Jul 1 13:37:09 raspberrypi python3.5[699]: Loaded 12 hardware references
Jul 1 13:37:09 raspberrypi python3.5[699]: - Mqtt server set to localhost
Jul 1 13:37:09 raspberrypi python3.5[699]: - Mqtt port set to 1883
Jul 1 13:37:09 raspberrypi python3.5[699]: - Client id set to default
Jul 1 13:37:09 raspberrypi python3.5[699]: - Hardware set to Matrix Voice
Jul 1 13:37:09 raspberrypi python3.5[699]: - Using google as pattern with 18 leds
Jul 1 13:37:09 raspberrypi python3.5[699]: Initializing leds controller
Jul 1 13:37:09 raspberrypi python3.5[699]: INFO: [/dev/matrixio_regmap] was opened
Jul 1 13:37:09 raspberrypi python3.5[699]: Caught exception in on_connect: ‘NoneType’ object has no attribute ‘subscribe’
Jul 1 13:37:09 raspberrypi python3.5[699]: Snips Led Control started

Is working:
Jul 1 14:39:25 raspberrypi python3.5[698]: Starting Snips Led Control v. 1.8 beta
Jul 1 14:39:25 raspberrypi python3.5[698]: Initializing SnipsLedControl
Jul 1 14:39:25 raspberrypi python3.5[698]: Loading configurations
Jul 1 14:39:25 raspberrypi python3.5[698]: Loaded 12 hardware references
Jul 1 14:39:25 raspberrypi python3.5[698]: - Mqtt server set to localhost
Jul 1 14:39:25 raspberrypi python3.5[698]: - Mqtt port set to 1883
Jul 1 14:39:25 raspberrypi python3.5[698]: - Client id set to default
Jul 1 14:39:25 raspberrypi python3.5[698]: - Hardware set to Matrix Voice
Jul 1 14:39:25 raspberrypi python3.5[698]: - Using google as pattern with 18 leds
Jul 1 14:39:25 raspberrypi python3.5[698]: Initializing leds controller
Jul 1 14:39:25 raspberrypi python3.5[698]: INFO: [/dev/matrixio_regmap] was opened
Jul 1 14:39:25 raspberrypi python3.5[698]: Snips Led Control started

This is not the place for SLC support, SLC support is on the github repo