gpg decryption of and email notification - powershell

Question

Two issues I experience are,
It does the job but throws the error shown below.
The notification doesn't fire, the condition is not met at all.
gpg2.exe : gpg: encrypted with 2048-bit RSA key, ID D9A0AD5F, created
2017-07-04
At C:\Scripts\FinanceGPGDecryptor.ps1:24 char:5
+ & <<<< $gpg_prog --batch --yes --passphrase "$gpg_p" -r "$gpg_r" -o "$out_file" -d "$in_file"
+ CategoryInfo : NotSpecified: (gpg: encrypted ...ated 2017-07-04:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
"key_id>"
# Variables
$gpg_prog = "C:\Program Files (x86)\GNU\GnuPG\pub\gpg2.exe"
$sFolder = "J:\Receive\"
$dFolder = "J:\Receive\Decrypted\"
$aFolder = "J:\Receive\Archived\"
$Log = "J:\Receive\decrypt.log"
$gpg_p = "****"
$gpg_r = "key_id"
$recipients = #("alias#company.com")
$date = date;
Add-Content $Log $date;
Set-Location J:\
# gpg wrapper
function gpg_me {
$in_file = $sFolder + $args[0] + ".pgp"
$out_file = $dFolder + $args[0] + ".txt"
#Write-Host $in_file " | " $out_file
& $gpg_prog --batch --yes --passphrase "$gpg_p" -r "$gpg_r" -o "$out_file" -d "$in_file"
if (!$LastExitCode) {
Add-Content $Log "Inbound file: $in_file | Outbound file: $out_file";
Move-Item -Path $in_file -Destination $aFolder -force
#echo "all good" $LastExitCode
}
}
# Loop thru current directory.
$items = Get-ChildItem -Path $sFolder
foreach ($item in $items) {
#if the item is NOT a directory, then process it.
if ($item.Attributes -ne "Directory") {
#Write-Host "file found:" $item
if ($Output = $item -like "*.pgp") {
#Write-Host "Decrypting new file " $item "'" $Output
gpg_me $item.BaseName
} else {
# // File does not exist
# Write-Host $item.Name " is not a file for decrypting:"
}
}
}
Add-Content $Log "`n **********`n";
Write-Host "LastExitCode:" $LastExitCode
Write-Host "Output:" $Output
if ($Output -and !$LastExitCode) {
Send-MailMessage -From "noreply#compnay.com" -SmtpServer smtp.company.com -To "$recipients" -Subject "file received and decrypted" -Body "Decrypted file can be found at $dFolder" -Attachment $Log;
} else{
}