NC Stops Working 5 Minutes After Reboot

I’ve just installed NC on Ubuntu Server 18.04 on a Raspberry Pi, and it works fine for the most part - however, it stops working after 5 minutes or so after reboot. I get an Internal server error (500), then I reboot the server, it works fine and then stops working again. Anyone experience anything like this before?

Welcome to the forum. For new issues we normally show an issue template that forces you to specify information. These more specific information is missing now (logfiles, especially webserver error logs, NC version number, …).