7.5" Image Upload service fails

[jhbruhn]

Describe the bug When using a 7.5" display and the dlimg service, it fails with this error:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 468, in _async_step
    await getattr(self, handler)()
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 703, in _async_call_service_step
    response_data = await self._async_run_long_action(
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 665, in _async_run_long_action
    return long_task.result()
           ^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 1974, in async_call
    response_data = await coro
                    ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2011, in _execute_service
    return await target(service_call)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/open_epaper_link/__init__.py", line 37, in dlimg
    hwtype = hass.states.get(DOMAIN + "." + mac.lower() + "hwtype").state
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'state'

To Reproduce Steps to reproduce the behavior:

1. run dlimg with any image url and a 7.5" display

[jhbruhn]

Also happens with 2.9" display