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Mail method attach Data not work with file

I have a CSV file:

$fileContent = $tempLocalDriver->get($file->getFilename()); // UTF-8

next, this file movie to the job:

$fileInfo = [

    'file' => base64_encode($fileContent),

    'name' => sprintf('attachment.%s', $file->getClientOriginalExtension()),

    'mime' => $file->getClientMimeType()

    ];

ProductImportNotificationJob::dispatch($user, $fileInfo);

In process instance mail-item and run this code:

$mailObject = new ProductImportNotificationEmail();

        $mailObject

            ->attachData(

                base64_decode($fileInfo['file']),

                $fileInfo['name'],

                ['mime' => $fileInfo['mime']]

            );