Astro☀night#start channel UNDEF and others too

Hi all,

I got the same Problems:

It’s starts with:

2019-05-23 00:00:30.337 [vent.ItemStateChangedEvent] - Night_Time_End changed from 2019-05-23T01:31:00.000+0200 to UNDEF

and on next day:

2019-05-24 00:00:30.270 [vent.ItemStateChangedEvent] - Night_Time_Start changed from 2019-05-24T01:08:00.000+0200 to UNDEF
2019-05-24 00:00:30.300 [vent.ItemStateChangedEvent] - Astro_Morning changed from 2019-05-23T01:31:00.000+0200 to UNDEF

I do nothing on my system (Openhab 2.4.005 on a synology nas) and Astro binding works fine since last year. Location is middle of Germany