# Couldn't start printing Using ocra slicer with voron2.4

**URL:** <https://klipper.discourse.group/t/couldnt-start-printing-using-ocra-slicer-with-voron2-4/10305>\
**Category:** General Discussion\
**Created:** [September 5, 2023, 5:03pm UTC](https://klipper.discourse.group/t/couldnt-start-printing-using-ocra-slicer-with-voron2-4/10305 "2023-09-05T17:03:10Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![character.1](https://avatars.discourse-cdn.com/v4/letter/c/258eb7/32.png) [@character.1](https://klipper.discourse.group/u/character.1)\
**Post date:** [September 5, 2023, 5:03pm UTC](https://klipper.discourse.group/t/couldnt-start-printing-using-ocra-slicer-with-voron2-4/10305/1 "2023-09-05T17:03:10Z")

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### Basic Information:

Printer Model: Voron2.4  
 MCU / Printerboard:Monster8 with raspberry pi4  
 `klippy.log`

[klippy (2).zip](https://klipper.discourse.group/uploads/short-url/uwMiid9PDkHgh9kPS7TmGYvo3pE.zip) (2.0 MB)

### Describe your issue:

 ![Snipaste_2023-09-06_00-57-37](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/9/9fb73b55dca3a00478fdbc74ab78f4f9ee6981eb.jpeg)

recently I been caught into the issues which I started printing but klipper react nothing but the picture showing above and it doesn’t telling any error in the command window  
this problem only occur on some of the model i sliced recently when I printed previous file I uploaded or previous model everythings goes right again

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**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\
**Post date:** [September 5, 2023, 5:49pm UTC](https://klipper.discourse.group/t/couldnt-start-printing-using-ocra-slicer-with-voron2-4/10305/2 "2023-09-05T17:49:49Z")

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There are various issues in your log and from your description and a 20MB log, there is no further diagnose possible.

```auto
Starting SD card print (position 0)
virtual_sdcard dispatch
Traceback (most recent call last):
  File "/home/pi/klipper/klippy/extras/virtual_sdcard.py", line 264, in work_handler
    self.gcode.run_script(line)
  File "/home/pi/klipper/klippy/gcode.py", line 216, in run_script
    self._process_commands(script.split('\n'), need_ack=False)
  File "/home/pi/klipper/klippy/gcode.py", line 200, in _process_commands
    self._respond_error(str(e))
UnicodeEncodeError: 'ascii' codec can't encode character u'\u5200' in position 46: ordinal not in range(128)
Exiting SD card print (position 93854)

```

This error is due to a filename containing non-ascii characters. Either make sure to not use them or switch to Python 3, which can handle them.

```auto
Got EOF when reading from device
Timeout with MCU 'mcu' (eventtime=35732.139086)
Transition to shutdown state: Lost communication with MCU 'mcu'

```

For these errors, see [Got EOF when reading from device](https://klipper.discourse.group/t/got-eof-when-reading-from-device/6638)

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<div class="post-metadata">

**Author:** ![character.1](https://avatars.discourse-cdn.com/v4/letter/c/258eb7/32.png) [@character.1](https://klipper.discourse.group/u/character.1)\
**Post date:** [September 6, 2023, 4:06am UTC](https://klipper.discourse.group/t/couldnt-start-printing-using-ocra-slicer-with-voron2-4/10305/3 "2023-09-06T04:06:24Z")

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really thanks, upgrading my enviroment to python 3 it works, but I still curious why this character will appear in some of the gcode file and klipper with python2 seems totally unable to deal with it

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**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\
**Post date:** [March 7, 2024, 9:34pm UTC](https://klipper.discourse.group/t/couldnt-start-printing-using-ocra-slicer-with-voron2-4/10305/4 "2024-03-07T21:34:32Z")

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