Describe the bug
When I pass a command I have the following answer :

miiocli genericmiot --ip xxxxxxxx --token xxxxxxxx status
Running command status
ERROR Exception: 1 validation error for DeviceModel click_common.py:57
services -> 1
'NoneType' object is not iterable (type=type_error)
Traceback (most recent call last):
File "/usr/local/lib/python3.9/dist-packages/miio/click_common.py", line 55, in call
return self.main(*args, **kwargs)
File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 1078, in main
rv = self.invoke(ctx)
File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 1688, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 1688, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 1434, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 783, in invoke
return __callback(*args, **kwargs)
File "/usr/local/lib/python3.9/dist-packages/miio/click_common.py", line 306, in wrap
result = kwargs["result"] = func(*args, **kwargs)
File "/usr/local/lib/python3.9/dist-packages/click/decorators.py", line 92, in new_func
return ctx.invoke(f, obj, *args, **kwargs)
File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 783, in invoke
return __callback(*args, **kwargs)
File "/usr/local/lib/python3.9/dist-packages/miio/click_common.py", line 271, in
command_callback
return miio_command.call(miio_device, *args, **kwargs)
File "/usr/local/lib/python3.9/dist-packages/miio/click_common.py", line 219, in call
return method(*args, **kwargs)
File "/usr/local/lib/python3.9/dist-packages/miio/click_common.py", line 186, in _wrap
return func(self, *args, **kwargs)
File "/usr/local/lib/python3.9/dist-packages/miio/integrations/genericmiot/genericmiot.py", line
64, in status
self._initialize_descriptors()
File "/usr/local/lib/python3.9/dist-packages/miio/integrations/genericmiot/genericmiot.py", line
143, in _initialize_descriptors
self.initialize_model()
File "/usr/local/lib/python3.9/dist-packages/miio/integrations/genericmiot/genericmiot.py", line
56, in initialize_model
self._miot_model = miotcloud.get_device_model(self.model)
File "/usr/local/lib/python3.9/dist-packages/miio/miot_cloud.py", line 90, in get_device_model
return DeviceModel.parse_obj(spec)
File "/usr/local/lib/python3.9/dist-packages/pydantic/v1/main.py", line 526, in parse_obj
return cls(**obj)
File "/usr/local/lib/python3.9/dist-packages/miio/miot_models.py", line 456, in init
super().init(*args, **kwargs)
File "/usr/local/lib/python3.9/dist-packages/pydantic/v1/main.py", line 341, in init
raise validation_error
pydantic.v1.error_wrappers.ValidationError: 1 validation error for DeviceModel
services -> 1
'NoneType' object is not iterable (type=type_error)

Maybe because there is 4 version of the roidmi v66?

Version information (please complete the following information):

• OS: Debian 11
• python-miio: miiocli, version 0.6.0.dev0

Device information:
Model: roidmi.vacuum.v66
Hardware version: Linux
Firmware version: 1.4.6_3271
Supported using: GenericMiot
Supported by genericmiot: True

To Reproduce
Steps to reproduce the behavior:

1. Execute the command : miiocli genericmiot --ip xxxxxxxx --token xxxxxxxx status