Hi Nikolay,
Thank you for your suggestion. I'm not sure, but think that after a certain time the session expires and I have to reload the page. And then I still have to open the new Log file and close the old one.
I have to admit, this is a very good question 
Since I'm not that experienced in web development I didn't have the SeverLogs View in my mind. So thank you for the hint.
Best regards
Felix