why this error？

$users=Get-Content H:\powershell\erp\NOERP.txt 
$out = 0
foreach($user in $users) {
    $out += (Get-ADUser -Filter * -SearchBase  $user ).count   
    }
$out

txt like this

i will get this error,But I can execute by one line 。。。。。Get aduser: the distinguished name provided must belong to one of the following partitions