Error not "list" to str

[thamarnan]

Logger: homeassistant.components.websocket_api.http.connection
Source: custom_components/vestaboard/__init__.py:155
Integration: Home Assistant WebSocket API ([documentation](https://www.home-assistant.io/integrations/websocket_api), [issues](https://github.com/home-assistant/core/issues?q=is%3Aissue+is%3Aopen+label%3A%22integration%3A+websocket_api%22))
First occurred: 9:49:25 PM (2 occurrences)
Last logged: 9:50:47 PM

[140417457095232] Error handling message: Unknown error (unknown_error) meenet from 192.167.0.71 (Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36)
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/websocket_api/decorators.py", line 26, in _handle_async_response
    await func(hass, connection, msg)
  File "/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py", line 716, in handle_execute_script
    response = await script_obj.async_run(msg.get("variables"), context=context)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 1569, in async_run
    return await asyncio.shield(run.async_run())
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 420, in async_run
    await self._async_step(log_exceptions=False)
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 470, in _async_step
    self._handle_exception(
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 493, in _handle_exception
    raise exception
  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/vestaboard/__init__.py", line 213, in post
    result = await vestaboard.write(lines)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/vestaboard/__init__.py", line 166, in write
    async with self.post(self.encode_lines(lines)) as response:
                         ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/vestaboard/__init__.py", line 155, in encode_lines
    lines += [''] * (6 - len(lines))
TypeError: can only concatenate str (not "list") to str

I'm getting this error, not sure how to solve this

[DanielBaulig]

Make sure to pass a list / array to the vestaboard.post service, e.g.

- service: vestaboard.post
  data:
    lines:
      - Line 1
      - Line 2

Even when just providing a single line. The following will not work (and result in the error you shared):

- service: vestaboard.post
  data:
    lines: "This is a single line instead of an array / list".

[DanielBaulig]

Commit e6aa1fe57600f24704cc4ec25d65b1b155c5ed6d adds a more meaningful error message. Closing this issue out for now. Please let me know of this doesn't help you resolve your issue.

[thamarnan]

It's working now. Just like you mention, need to be as a list. not just single line. thanks!