Web interface sometimes falls

Hi, i have Turris Omnia - RTROM01, Turris OS version 3.7.2
Web interface ( luci ) sometimes falls ( accidentally when pressing any button ) and after doesn’t respond on the 80th port before reset of a router. It is the known problem or not ? Where I can find a logs and how to restart the interface without reboot router ?

you can try restart lighttpd via ssh session

/etc/init.d/lighttpd restart

And logs are generally there:

/var/log/…

The most interesting is:
/var/log/messages

Web administration not accessible