Connection to Printer Timeout

What is the problem?
After printing for a few hours the connection to the printer had an timeout, see logs.

What did you already try to solve it?
Nothing, it just seems a little bit worrying because it kept the printer in a stuck place without aborting. Keeping Temperatures high / nozzle near object.

Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware, octoprint.log, serial.log or output on terminal tab, ...)
octoprint.log (3.3 KB)

Octoprint Version: 1.3.8
Printer: Anycubic i3 running Marlin 1.1.8