ignore_errors on imported resource

[vimishor]

If I set ignore_errors to true on a imported resource which does not exists, a warning is triggered.

Expected behavior:
If the resource does not exists and ignore_errors is set to true, I would expect no warning and/or exception.

Test case:

# File: config.yml

imports:
  - { resource: parameters.yml }
  - { resource: parameters_dev.yml, ignore_errors: true }

# ...

Would trigger:

Warning: array_replace_recursive(): Argument #1 is not an array in [...]/vendor/herrera-io/wise/src/lib/Herrera/Wise/Loader/AbstractFileLoader.php on line 172

At a first glance, if import method called on AbstractFileLoader.php L166-L170 will return null, an empty array should be passed as first param to array_replace_recursive from L165.

I don't know if this is the expected behavior or a bug, but it will be nice to be compliant with Symfony