"Attempt to decode JSON with unexpected mimetype" when trying to turn on device

[trancefam]

Version of the custom_component

0.2.4

Configuration

None

Describe the bug

I receive the below error when trying to turn on the imported devices that were already off. I have confirmed that turning off and turning on devices that were already on work fine. I am running the latest version of HA and latest version of LedFx (v11.1).

e.g. The issue happens for all with the X below:

Debug log

[140297667665728] 0, message='Attempt to decode JSON with unexpected mimetype: text/plain; charset=utf-8', url=URL('http://MYURLandPORT/api/devices/wled6/effects')
[140297667665728] 0, message='Attempt to decode JSON with unexpected mimetype: text/plain; charset=utf-8', url=URL('http://MYURLandPORT/api/devices/stool/effects')
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py", line 135, in handle_call_service
    await hass.services.async_call(
  File "/usr/src/homeassistant/homeassistant/core.py", line 1445, in async_call
    task.result()
  File "/usr/src/homeassistant/homeassistant/core.py", line 1480, in _execute_service
    await handler.job.target(service_call)
  File "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 204, in handle_service
    await self.hass.helpers.service.entity_service_call(
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 593, in entity_service_call
    future.result()  # pop exception if have
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 664, in async_request_call
    await coro
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 630, in _handle_entity_call
    await result
  File "/usr/src/homeassistant/homeassistant/components/light/__init__.py", line 230, in async_handle_light_on_service
    await light.async_turn_on(**params)
  File "/config/custom_components/ledfxrm/light.py", line 149, in async_turn_on
    await self.coordinator.api.async_device_on(self.devicename)
  File "/config/custom_components/ledfxrm/__init__.py", line 418, in async_device_on
    await set_effect.json()
  File "/usr/local/lib/python3.8/site-packages/aiohttp/client_reqrep.py", line 1097, in json
    raise ContentTypeError(
aiohttp.client_exceptions.ContentTypeError: 0, message='Attempt to decode JSON with unexpected mimetype: text/plain; charset=utf-8', url=URL('http://MYURLandPORT/api/devices/wled6/effects')