EMAIL Attachments fail after update from 4.1.1 to 4.1.2

Hi All,
I updated my CLI program from 4.1.1 to 4.1.2 with all files updated as specified in the update documentation and I got this error
/---------------------------

[ErrorException]

Undefined array key "cid"

at SYSTEMPATH\Email\Email.php:763

Backtrace:
  1    SYSTEMPATH\Email\Email.php:763
      CodeIgniter\Debug\Exceptions()->errorHandler(2, 'Undefined array key "cid"', 'C:\\CI_system_4_1_2\\Email\\Email.php', 763)

  2    APPPATH\Controllers\SBSEmail.php:74
      CodeIgniter\Email\Email()->setAttachmentCID('C:\\webroot\\sbs_archievement_emails\\public\\images\\uow.jpg')

  3    SYSTEMPATH\CodeIgniter.php:931
      App\Controllers\SBSEmail()->index()

  4    SYSTEMPATH\CodeIgniter.php:439
      CodeIgniter\CodeIgniter()->runController(Object(App\Controllers\SBSEmail))

  5    SYSTEMPATH\CodeIgniter.php:339
      CodeIgniter\CodeIgniter()->handleRequest(null, Object(Config\Cache), false)

  6    FCPATH\index.php:36
      CodeIgniter\CodeIgniter()->run()

/--------------------------------------
I replaced the EMAIL\EMAIL.PHP   function  "setAttachmentCID($filename)" with the version from 4.1.1 (see below) and  the program worked again. 
Running the CLI program on PHP 8.06
public function setAttachmentCID($filename)
{
/*  -----------   
foreach ($this->attachments as $i => $attachment)
{
if ($attachment['name'][0] === $filename)
{
$this->attachments[$i]['multipart'] = 'related';

$this->attachments[$i]['cid'] = uniqid(basename($attachment['name'][0]) . '@', true);

return $attachment['cid'];
}
}
-------    */       
for ($i = 0, $c = count($this->attachments); $i < $c; $i ++)
{
if ($this->attachments[$i]['name'][0] === $filename)
{
$this->attachments[$i]['multipart'] = 'related';

$this->attachments[$i]['cid'] = uniqid(basename($this->attachments[$i]['name'][0]) . '@', true);

return $this->attachments[$i]['cid'];
}
}


return false;
}