remove duplicate words in file name

Question

Batch delete duplicate words in file name the code is posted in the this post, but it does not work with me Deleting repeated parts of a file name?

Get-ChildItem -Path .\* -File -Recurse | ForEach-Object {
    Rename-Item $_ -NewName ((($_.Basename.Split("_") | Select-Object -Unique) -Join "_") + $($_.Extension))
}