Log Level changed?

Don´t understand all of this.

I made a snapshot upgrade last thursday (24.09.2017) and since this time i don´t get any new logs in openhab.log and events.log.

How can i change this back to the previous behavior? Is there a short way or do i have to change all the config-files???

Can you explain this for “not so big programming cracks” maybe an example for dummys?

Is this log4j2 a new binding which i have to install first?

SOLVED: