HPB service down every few days -> Maintenance mode

Hello, my nexcloudpi-cloud on my Raspberry Pi 3 is going strong. But every few days (sometimes 1 day, sometimes up to a week) it goes to maintenance mode because HPB service is down. After I noticed that, which is mostly because my phone can’t upload the pics I took, I reboot the ncp and after that it works fine again. Until 2 or 3 days later it all happens again.

I created a gist on github with the latest report after yesterday’s crash, reboot and updating ncp to v1.47.0.

Is it a settings issue or maybe a wrong version that I installed?

if you have any further question, I try the best to give you the informations you need to help me solve this problem.
Thanks in advance.