Parent position lov is blank when creating a position using position details

Summary:

We have a contractor who is trying to create a parent position lov is blank

Content (required):

This is happening with contractor, when trying to create a position, Myclient groups>>workforce structures>>position details>>Add position .

Parent position lov is blank, unable to select position. Unable to troubleshoot the issue.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):