Octoprint not running after a print completes

This keeps happening lately...after a print completes, I have the blue "reconnect" on the web browser to go into Octoprint. When that fails, I get this

I'm running the very latest version and a bit stumped why this keeps happening over the past few days

I telnet in, restart the service and on with the next print. But something is awry and I am unsure how to debug it with my novice Linux/Pi experience.

Running on a Pi3, nothing fancy...pretty stock setup with Octoprint Anywhere Plug in (if that matters?)

Your octoprint.log would let us know what it was doing when it decided to crash.