Seeing errors when sending a mail with files attached as file contents

Hi,
As in #47, I still get this error with WSOD. v 8.x-1.0-alpha4

The website encountered an unexpected error. Please try again later.
ValueError: realpath(): Argument #1 ($path) must not contain any null bytes in realpath() (line 139 of core/lib/Drupal/Core/File/FileSystem.php).
realpath('') (Line: 139)
Drupal\Core\File\FileSystem->realpath('') (Line: 395)
Drupal\mimemail\Utility\MimeMailFormatHelper::mimeMailFile(NULL, '', 'google_analytics_audience-_-_brise-lames.pdf', 'application/pdf', 'attachment') (Line: 216)
Drupal\mimemail\Utility\MimeMailFormatHelper::mimeMailHtmlBody('
    Mime Mail message template
        test envoi pj
', 'Poste recherché dans le domaine [webform_submission:webform:element:poste_recherche:raw]', , 'test envoi pj
', Array) (Line: 206)
Drupal\mimemail\Plugin\Mail\MimeMail->prepareMessage(Array) (Line: 105)
Drupal\mimemail\Plugin\Mail\MimeMail->format(Array) (Line: 43)
Drupal\mailsystem\Adapter->format(Array) (Line: 289)

Do I need to patch the module or something else ?
Thanks

locally, if I use

$params['attachments'][] = [
'filepath' => $file->getFileUri(),
];

avoided this patch, since this patch is stilled not imported to Module itself in alph-4.

Patch #39 doesn't work with latest alpha5 :(

Tried to port #39 patch to alpha5 source code. Seems to work, not heavily tested though.

#55 +1 worked for me, PHP 8.1.16 - D9.5.8

#55 +1 worked for me to with latest alpha5.

Thanks @mably.

#55 worked for me as well. Thank you @mably !

#55 works well

#55 works for me too.
Thanks @mably

#55 works with alpha6 on Drupal 10.2.3 with PHP 8.2.16

#55 worked well with PHP 8.2.17 and Drupal 10.2.5.