Declaration of kartik\export\ExportWriterPdf::createExternalWriterInstance($config = []) not compatible with PhpSpreadsheet v2

[TonisOrmisson]

Steps to reproduce the issue

1. Update to PhpSpreadsheet v2
2. try to export a PDF file
3. Not compatible Exception is thrown:

Declaration of kartik\export\ExportWriterPdf::createExternalWriterInstance($config = []) must be compatible with PhpOffice\PhpSpreadsheet\Writer\Pdf\Mpdf::createExternalWriterInstance(array $config): Mpdf\Mpdf

Isolating the problem

this module:

yii2-export/src/ExportWriterPdf.php

Line 35 in 5c033d4

protected function createExternalWriterInstance($config = [])

parent class:
https://github.com/PHPOffice/PhpSpreadsheet/blob/0c37ae2c30599819d7fab7d13ab5027ffd71f61a/src/PhpSpreadsheet/Writer/Pdf/Mpdf.php#L22
expects (array $config) as params...

[ahmadfadlydziljalal]

Ya, the problem is happened to me also,
For now, Do you have any solution mate ?