array_filter() expects parameter 1 to be array, null given FieldInstanceSettings.php:47

Problem/Motivation

While migration field instances:

$ drush migrate-import upgrade_d7_field_instance
[warning] array_filter() expects parameter 1 to be array, null given FieldInstanceSettings.php:47
[notice] Processed 239 items (95 created, 0 updated, 0 failed, 144 ignored) - done with 'upgrade_d7_field_instance'

This happens because entity reference field instance could not has 'sort'-field at all.

Patch will be attach.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet