AttributeError: 'bool' object has no attribute 'hass' in HA log file

Configuration
1

Hello,
I found out this error in the HA logs.
I cannot figure out what is wrong because I cannot remember to have see it before.
I am using HA running in a docker-container from the image homeassistant/raspberrypi3-homeassistant:latest
I installed HACS and Alexa Media Player as integrations but they looks to run fine.
I can understand that the error in connected to notify component but nothing else.
What could be wrong?
Apparently HA works fine without any problem.

Thank You

Regards

M.

2019-09-22 12:25:24 ERROR (MainThread) [homeassistant.core] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/notify/__init__.py", line 96, in async_setup_platform
    notify_service.hass = hass
AttributeError: 'bool' object has no attribute 'hass'
2

Just before that error message there should be an INFO message that looks like this:

[homeassistant.components.notify] Setting up notify.XXX

What does it say for “XXX”?

3

Anyone figured this error out? I am not getting the exact same one. Seems to have to do from something in the Alexa Notify addon from what I see.

2019-11-22 22:23:56 DEBUG (MainThread) [custom_components.alexa_media.notify] g**********n@g*******m: Media player G************F7Q not loaded yet; delaying load
2019-11-22 22:23:56 DEBUG (MainThread) [custom_components.alexa_media.helpers] alexa_media.notify.async_get_service: Try: 4/5 after waiting 16 seconds result: False
2019-11-22 22:23:57 DEBUG (MainThread) [custom_components.alexa_media.notify] g**********n@g*******m: Media player G************F7Q not loaded yet; delaying load
2019-11-22 22:23:57 DEBUG (MainThread) [custom_components.alexa_media.helpers] alexa_media.notify.async_get_service: Try: 5/5 after waiting 32 seconds result: False
2019-11-22 22:23:57 ERROR (MainThread) [homeassistant.core] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/notify/__init__.py", line 162, in async_platform_discovered
    await async_setup_platform(platform, discovery_info=info)
  File "/usr/src/homeassistant/homeassistant/components/notify/__init__.py", line 96, in async_setup_platform
    notify_service.hass = hass
AttributeError: 'bool' object has no attribute 'hass'