Redmine

I wonder if "not_a_valid_parent" is missing from all the locale files or not because the following error message showed up.

"Parent task translation missing: en, activerecord, errors, models, issue, attributes, parent_issue_id, not_a_valid_parent"

This error came up when I made the following operation.

1. Suppose I have this kind of subtask tickets

• 130: parent
  • 131: child
    • 132: grandchild

2. When I changed 131's parent task from 130 to 132, the above error message appeared.

Thanks.