Error unloading entry configuration.yaml for sensor - what sensor?

Getting this error… but no clue where to look for…

Logger: homeassistant.config_entries
Source: config_entries.py:772
First occurred: 19:46:02 (1 occurrences)
Last logged: 19:46:02

Error unloading entry configuration.yaml for sensor
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 772, in async_unload
    result = await component.async_unload_entry(hass, self)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/sensor/__init__.py", line 140, in async_unload_entry
    return await component.async_unload_entry(entry)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 200, in async_unload_entry
    raise ValueError("Config entry was never loaded!")
ValueError: Config entry was never loaded!