NoneType has no attribute 'get'

[Nathan22211]

Description

getting this error when enabling the extension: Internal error during connect: 'NoneType' object has no attribute 'get'

Reproduce

add

[extended_template]
path: /home/biqu/printer_data/config/config.yaml```
to the config. make sure the config.yaml file is there or else it complains about that as well.

### Expected behavior

should startup normally

### Extended Macro Config

```bash
nothing added as I couldn't get it to load

Extended Template Config

[extended_template]
path: /home/biqu/printer_data/config/config.yam

Macro Config

not macro related

Macro Python Code

not macro related

Logs

Unhandled exception during connect
Traceback (most recent call last):
  File "/home/biqu/klipper/klippy/klippy.py", line 130, in _connect
    self._read_config()
  File "/home/biqu/klipper/klippy/klippy.py", line 123, in _read_config
    self.load_object(config, section_config.get_name(), None)
  File "/home/biqu/klipper/klippy/klippy.py", line 112, in load_object
    self.objects[section] = init_func(config.getsection(section))
  File "/home/biqu/klipper/klippy/extras/extended_template.py", line 253, in load_config
    return PythonFunction(config)
  File "/home/biqu/klipper/klippy/extras/extended_template.py", line 182, in __init__
    self.Loader = self._get_loader()
  File "/home/biqu/klipper/klippy/extras/extended_template.py", line 212, in _get_loader
    ext = self.config_path.split('.')[-1]
AttributeError: 'NoneType' object has no attribute 'split'

Klippy Venv Python

Python 3.X

Installer Python

Python 3.X

Klippy Version

0.13.0-g61c0c8d2

Klippy Version

0.3

Additional Info

No response