Good day
Starting using Home Assistant a bit more 
I have this in configuration.yaml:
notify:
#--------------------------------------------------------
- name: solar_log
platform: file
filename: /config/solar_log.csv
timestamp: true
- platform: smtp
- platform: telegram
Last 2 platforms work 100%
For platform: file I get after Restart the error below.
Anyone can point me to a solution? I expected to create a simple log file
Thanks in advance.
Logger: homeassistant.components.notify
Source: components/notify/legacy.py:112
integration: Notifications (documentation, issues)
First occurred: 10:29:48 (1 occurrences)
Last logged: 10:29:48
Error setting up platform file
Traceback (most recent call last):
File “/usr/src/homeassistant/homeassistant/components/notify/legacy.py”, line 112, in async_setup_platform
raise HomeAssistantError(“Invalid notify platform.”) # noqa: TRY301
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
homeassistant.exceptions.HomeAssistantError: Invalid notify platform.