bug: fix error due to outdated python-can version

[CaioIsCoding]

Fix Error on Klipper Install

/=======================================================\
|     ~~~~~~~~~~~~~~~~~ [ KIAUH ] ~~~~~~~~~~~~~~~~~     |
|        Klipper Installation And Update Helper         |
|     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     |
\=======================================================/

###### Initializing Klipper installation ...

/=======================================================\
| Please select your preferred Python version.          | 
| The recommended version is Python 3.x.                | 
|-------------------------------------------------------|
|  1) [Python 3.x]  (recommended)                       | 
|  2) [Python 2.7]  (legacy)                            | 
|-------------------------------------------------------|
|                       B) « Back                       |
\=======================================================/
###### Select Python version: 1
   [➔] Python 3.x

/=======================================================\
| Please select the number of Klipper instances to set  |
| up. The number of Klipper instances will determine    |
| the amount of printers you can run from this host.    |
|                                                       |
| WARNING:                                              |
| Setting up too many instances may crash your system.  |
|-------------------------------------------------------|
|                       B) « Back                       |
\=======================================================/
###### Number of Klipper instances to set up: 1
   [➔] Instance count: 1


###### Installing single Klipper instance ...

###### Checking for the following dependencies:
● git 
[✓ OK] Dependencies already met!

###### Cloning Klipper from https://github.com/Sovol3d/klipper ...
Cloning into '/home/sovol/klipper'...
remote: Enumerating objects: 2467, done.
remote: Counting objects: 100% (2467/2467), done.
remote: Compressing objects: 100% (1481/1481), done.
remote: Total 2467 (delta 961), reused 2461 (delta 955), pack-reused 0 (from 0)
Receiving objects: 100% (2467/2467), 18.47 MiB | 3.82 MiB/s, done.
Resolving deltas: 100% (961/961), done.
Updating files: 100% (2244/2244), done.
Already on 'master'
Your branch is up to date with 'origin/master'.

###### Reading dependencies...
virtualenv
python3-dev
libffi-dev
build-essential
libncurses-dev
libusb-dev
avrdude
gcc-avr
binutils-avr
avr-libc
stm32flash
libnewlib-arm-none-eabi
gcc-arm-none-eabi
binutils-arm-none-eabi
libusb-1.0
pkg-config
dfu-util

###### Installing packages...
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'libusb-1.0-0-dev' for regex 'libusb-1.0'
Note, selecting 'libusb-1.0-doc' for regex 'libusb-1.0'
Note, selecting 'libusb-1.0-0' for regex 'libusb-1.0'
avr-libc is already the newest version (1:2.0.0+Atmel3.6.2-1.1).
avrdude is already the newest version (6.3-20171130+svn1429-2+b1).
binutils-arm-none-eabi is already the newest version (2.35.2-2+14+b2).
binutils-avr is already the newest version (2.26.20160125+Atmel3.6.2-2).
build-essential is already the newest version (12.9).
dfu-util is already the newest version (0.9-1+b1).
gcc-arm-none-eabi is already the newest version (15:8-2019-q3-1+b1).
gcc-avr is already the newest version (1:5.4.0+Atmel3.6.2-1).
libffi-dev is already the newest version (3.3-6).
libusb-dev is already the newest version (2:0.1.12-32).
libusb-1.0-0 is already the newest version (2:1.0.24-3).
libusb-1.0-0-dev is already the newest version (2:1.0.24-3).
libusb-1.0-doc is already the newest version (2:1.0.24-3).
libncurses-dev is already the newest version (6.2+20201114-2+deb11u2).
libnewlib-arm-none-eabi is already the newest version (3.3.0-1).
pkg-config is already the newest version (0.29.2-1).
virtualenv is already the newest version (20.4.0+ds-2+deb11u1).
python3-dev is already the newest version (3.9.2-3).
stm32flash is already the newest version (0.5+git20200914+2b0f078-1).
0 upgraded, 0 newly installed, 0 to remove and 205 not upgraded.
[✓ OK] Klipper packages installed!

###### Installing Python 3.9.2 virtual environment...
created virtual environment CPython3.9.2.final.0-64 in 659ms
  creator CPython3Posix(dest=/home/sovol/klippy-env, clear=False, no_vcs_ignore=False, global=False)
  seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/home/sovol/.local/share/virtualenv)
    added seed packages: pip==20.3.4, pkg_resources==0.0.0, setuptools==44.1.1, wheel==0.34.2
  activators BashActivator,CShellActivator,FishActivator,PowerShellActivator,PythonActivator,XonshActivator
Requirement already satisfied: pip in /home/sovol/klippy-env/lib/python3.9/site-packages (20.3.4)
Collecting pip
  Using cached pip-25.3-py3-none-any.whl (1.8 MB)
Installing collected packages: pip
  Attempting uninstall: pip
    Found existing installation: pip 20.3.4
    Uninstalling pip-20.3.4:
      Successfully uninstalled pip-20.3.4
Successfully installed pip-25.3
Collecting cffi==1.14.6 (from -r /home/sovol/klipper/scripts/klippy-requirements.txt (line 5))
  Using cached cffi-1.14.6-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl.metadata (1.2 kB)
Collecting pyserial==3.4 (from -r /home/sovol/klipper/scripts/klippy-requirements.txt (line 6))
  Using cached pyserial-3.4-py2.py3-none-any.whl.metadata (1.6 kB)
Collecting greenlet==2.0.2 (from -r /home/sovol/klipper/scripts/klippy-requirements.txt (line 7))
  Using cached greenlet-2.0.2-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl.metadata (4.1 kB)
Collecting Jinja2==2.11.3 (from -r /home/sovol/klipper/scripts/klippy-requirements.txt (line 8))
  Using cached Jinja2-2.11.3-py2.py3-none-any.whl.metadata (3.5 kB)
Collecting python-can==3.3.4 (from -r /home/sovol/klipper/scripts/klippy-requirements.txt (line 9))
  Using cached python_can-3.3.4-py2.py3-none-any.whl
Collecting markupsafe==1.1.1 (from -r /home/sovol/klipper/scripts/klippy-requirements.txt (line 10))
  Using cached MarkupSafe-1.1.1-cp39-cp39-manylinux2014_aarch64.whl.metadata (3.2 kB)
Collecting pycparser (from cffi==1.14.6->-r /home/sovol/klipper/scripts/klippy-requirements.txt (line 5))
  Using cached pycparser-2.23-py3-none-any.whl.metadata (993 bytes)
Collecting aenum (from python-can==3.3.4->-r /home/sovol/klipper/scripts/klippy-requirements.txt (line 9))
  Using cached aenum-3.1.16-py3-none-any.whl.metadata (3.8 kB)
Collecting wrapt~=1.10 (from python-can==3.3.4->-r /home/sovol/klipper/scripts/klippy-requirements.txt (line 9))
  Using cached wrapt-1.17.3-cp39-cp39-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl.metadata (6.4 kB)
Using cached cffi-1.14.6-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (208 kB)
Using cached pyserial-3.4-py2.py3-none-any.whl (193 kB)
Using cached greenlet-2.0.2-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (607 kB)
Using cached Jinja2-2.11.3-py2.py3-none-any.whl (125 kB)
Using cached MarkupSafe-1.1.1-cp39-cp39-manylinux2014_aarch64.whl (33 kB)
Using cached wrapt-1.17.3-cp39-cp39-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl (82 kB)
Using cached aenum-3.1.16-py3-none-any.whl (165 kB)
Using cached pycparser-2.23-py3-none-any.whl (118 kB)
Installing collected packages: pyserial, aenum, wrapt, pycparser, markupsafe, greenlet, python-can, Jinja2, cffi
   ━━━━╺━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1/9 [aenum]ERROR: Exception:
Traceback (most recent call last):
  File "/usr/lib/python3.9/py_compile.py", line 144, in compile
    code = loader.source_to_code(source_bytes, dfile or file,
  File "<frozen importlib._bootstrap_external>", line 853, in source_to_code
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/home/sovol/klippy-env/lib/python3.9/site-packages/aenum/_py2.py", line 5
    raise exc, None, tb
             ^
SyntaxError: invalid syntax

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.9/compileall.py", line 238, in compile_file
    ok = py_compile.compile(fullname, cfile, dfile, True,
  File "/usr/lib/python3.9/py_compile.py", line 150, in compile
    raise py_exc
py_compile.PyCompileError:   File "/home/sovol/klippy-env/lib/python3.9/site-packages/aenum/_py2.py", line 5
    raise exc, None, tb
             ^
SyntaxError: invalid syntax


During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/sovol/klippy-env/lib/python3.9/site-packages/pip/_internal/cli/base_command.py", line 107, in _run_wrapper
    status = _inner_run()
  File "/home/sovol/klippy-env/lib/python3.9/site-packages/pip/_internal/cli/base_command.py", line 98, in _inner_run
    return self.run(options, args)
  File "/home/sovol/klippy-env/lib/python3.9/site-packages/pip/_internal/cli/req_command.py", line 85, in wrapper
    return func(self, options, args)
  File "/home/sovol/klippy-env/lib/python3.9/site-packages/pip/_internal/commands/install.py", line 458, in run
    installed = install_given_reqs(
  File "/home/sovol/klippy-env/lib/python3.9/site-packages/pip/_internal/req/__init__.py", line 84, in install_given_reqs
    requirement.install(
  File "/home/sovol/klippy-env/lib/python3.9/site-packages/pip/_internal/req/req_install.py", line 781, in install
    install_wheel(
  File "/home/sovol/klippy-env/lib/python3.9/site-packages/pip/_internal/operations/install/wheel.py", line 737, in install_wheel
    _install_wheel(
  File "/home/sovol/klippy-env/lib/python3.9/site-packages/pip/_internal/operations/install/wheel.py", line 623, in _install_wheel
    success = compileall.compile_file(path, force=True, quiet=True)
  File "/usr/lib/python3.9/compileall.py", line 255, in compile_file
    msg = err.msg.encode(sys.stdout.encoding,
TypeError: encode() argument 'encoding' must be str, not None
sovol@SPI-XI:~/kiauh$ 

[CaioIsCoding]

@JamesH1978