What is the problem?
System specs below. No major changes to any of my setup but prints just started failing about 80-90% of the time. From the terminal I see it happening for one of two reasons, cannot tell which is ultimately causing the failure. I'm getting the "Error:Line Number is not Last Line Number+1.... " and also "Recv: echo:Unknown command: "}wÃ/µúþ¾?ü¨µ)Ã%º¬µ¤¥¡^Áì+ÿ{/9ý½ß°ê)¨¸J" or similar unknown commands with gibberish. Seems like everything is too chatty, and things get overwhelmed to the point it's just too much for one end or the other to digest and interpret correctly with line resends and gibberish in the mix.
What did you already try to solve it?
- Read multiple forum posts and tried the following:
- Tried different STL files, re-sliced the same files, issue still persist
- Lots of articles reference EMI or bad power supply and/or cable to Rpi, I've tried 4 different power supplies and even more cables, issue still persists
- Ran in SAFE mode, same issues persists
- Prints sometimes fail near the same layer, but it's not exactly the same spot... sometimes they fail early (15-20% complete) or sometimes it's 90% complete.
- Tried to diagnose when the issue started and what Octoprint or Plugin updates may occurred when issue started, but could not find make any correlations. Not saying this isn't the issue, just nothing there I can see (albeit I'm not the most technical).
Have you tried running in safe mode?
YES
Did running in safe mode solve the problem?
Print was successful, but errors/issues are still showing in logs that I think are the issue. How can I narrow down the issue, maybe it's a plugin?
Systeminfo Bundle
You can download this in OctoPrint's System Information dialog ... no bundle, no support!)
octoprint-systeminfo-20250813132135.zip (2.1 MB)
I've also uploaded some of the files from failure last night below. The "bundle" attached above is from SAFE mode print where I'm still seeing the same errors/issues, but the print did complete successfully (after it failed x5 not in SAFE mode).
Other_Files.zip (1.4 MB)
Additional information about your setup
OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible
- Ocotprint = v1.11.2
- OctoPi = Build 2023.07.18.111854 with "webcamd", based on OctoPi 1.0.0, running on Raspberry Pi 3 Model B Rev 1.2
- Printer = Ender3 Pro running Marlin v1.1.2 (2020-04-25)
- Printer HW Addons = CR Sprite Direct Drive extruder with integrated CRTouch and dual Z axis
- Browser = Issue persists across both Chrome and FireFox
- Laptop OS = Win 11
- Slicer = Cura v5.2.1
2025-08-13T05:00:00Z