What is the problem?
There was a communication error while talking to your printer. Please consult the terminal output and octoprint log for details Error: Printer requested line 25 but no sufficient history is available can't resend
*Always line 25
Particularly when heating up getting communication error (terminal suggests communication error - increasing timeout - no idea how to do that).
Fails just before print - print continues IF it has started already.but Octoprint dies/ freezes.
What did you already try to solve it?
I pre-heat which seems to dodge the initial communications problem when the print starts (This may be a placebo fix)...
Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware, octoprint.log, serial.log or output on terminal tab, ...)
Octoprint version 1.3.7 - issue did not occur with 1.3.6 (how do I revert without reflashing Pi3?)
running OctoPi
Printer - i3 Mega Ultrabase - had Foosel (fix) for i3 Mega on 1.3.6, maybe I need to reapply?
Printer is currently printing - Octoprint offline, will be at least 4 hours until its finished so I'm a little too afraid to try to reconnect at the moment to supply specific logs in case it disconnects the print.
Terminal supplies a generic communication error before the failure.