ha_tuya_ble: 500 internal server error

Hi, when I try to add the integration in HA I have this message

HA version 2023.4.6

In the logs:

Questo errore ha avuto origine da un'integrazione personalizzata.

Logger: aiohttp.server
Source: custom_components/tuya_ble/cloud.py:171
Integration: Tuya BLE
First occurred: 15:46:40 (3 occurrences)
Last logged: 16:30:16

Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/aiohttp/web_protocol.py", line 433, in _handle_request
    resp = await request_handler(request)
  File "/usr/local/lib/python3.10/site-packages/aiohttp/web_app.py", line 504, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.10/site-packages/aiohttp/web_middlewares.py", line 117, in impl
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/security_filter.py", line 85, in security_filter_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/forwarded.py", line 100, in forwarded_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/request_context.py", line 28, in request_context_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/ban.py", line 80, in ban_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/auth.py", line 235, in auth_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/view.py", line 146, in handle
    result = await result
  File "/usr/src/homeassistant/homeassistant/components/config/config_entries.py", line 148, in post
    return await super().post(request)
  File "/usr/src/homeassistant/homeassistant/components/http/data_validator.py", line 72, in wrapper
    result = await method(view, request, data, *args, **kwargs)
  File "/usr/src/homeassistant/homeassistant/helpers/data_entry_flow.py", line 71, in post
    result = await self._flow_mgr.async_init(
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 840, in async_init
    flow, result = await task
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 868, in _async_init
    result = await self._async_handle_step(flow, flow.init_step, data)
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 367, in _async_handle_step
    result: FlowResult = await getattr(flow, method)(user_input)
  File "/config/custom_components/tuya_ble/config_flow.py", line 237, in async_step_user
    await self._manager.build_cache()
  File "/config/custom_components/tuya_ble/cloud.py", line 215, in build_cache
    await self._fill_cache_item(item)
  File "/config/custom_components/tuya_ble/cloud.py", line 171, in _fill_cache_item
    await self._hass.async_add_executor_job(
  File "/usr/local/lib/python3.10/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.10/site-packages/tuya_iot/device.py", line 252, in update_device_list_in_smart_home
    self.update_device_function_cache()
  File "/usr/local/lib/python3.10/site-packages/tuya_iot/device.py", line 300, in update_device_function_cache
    for function in result["functions"]:
KeyError: 'functions'