UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xa1 in position 87: invalid start byte

[Olafejs]

MacOS + Prusaslicer after generate i have this error:

Post-processing script /usr/bin/python3 “/Users/XXX/Documents/XXX/XXX/bricklayers.py” -layerHeight 0.25 -extrusionMultiplier 1.1 on file /var/folders/fn/_Oyvdbs97rg84l_y9wfh1lqc0000gn/T/.24603_0.gcode.pp failed.
Error code: 1
Output:
Traceback (most recent call last):
File “/Users/XXX/Documents/XXX/XXX/bricklayers.py”, line 139, in process_gcode
File “/Users/XXX/Documents/XXX/XXX/bricklayers.py”, line 46, in process_gcode
lines = infile.readlines()
File “/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/codecs.py”, line 322, in decode
(result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xa1 in position 87: invalid start byte

Any idea where find error ? :)

[Olafejs]

Ok, error is from binary gcode of MK4S :)

[iitggithub]

I got the same error.

In Prusaslicer, I had to go to Printers > General and uncheck "Supports Binary G-code" and then save the configuration. The script isn't designed to work with binary g-code files..... yet.

[iitggithub]

Submitted a pull request to add binary g-code support. It does however require the bgcode utility to be installed in your path.

#26

[Zendemic]

I got the same error.

In Prusaslicer, I had to go to Printers > General and uncheck "Supports Binary G-code" and then save the configuration. The script isn't designed to work with binary g-code files..... yet.

Holy cow, I think I got it working! While trouble shooting with ChatGPT (please excuse my utter lack of coding knowledge), it gave me the following response. I am not sure if it actually changes much, but the changes seem to work allright in combination with the sugested changes above:

🛠 Fix 1: Modify the Script to Handle Encoding Errors
We need to update how the script opens the file to ignore encoding errors.

Modify bricklayers.py:
Change:

python
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with open(input_file, 'r') as infile:
To:

python
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with open(input_file, 'r', encoding='utf-8', errors='ignore') as infile:
Similarly, change:

python
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with open(input_file, 'w') as outfile:
To:

python
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with open(input_file, 'w', encoding='utf-8') as outfile: