CI_ENVIRONMENT = development not working

have you got in .env

Code:

logger.threshold = 9

Thanks for the suggestion, already tried to set error level to 9, but it's not helps. (I also restarted a php-fpm process on server for sure).
I suspect that can be related to some server settings but log file have the error message that means the php did not hide it.
I will check controller and view and try your suggestions.