pdfquickplugin.dll: the specified module could not be found

I try example:

https://code.qt.io/cgit/pyside/pyside-setup.git/tree/examples/pdf/quickpdfviewer

Then have error:

pdfquickplugin.dll: the specified module could not be found

Python311-venv/Lib/site-packages/PySide6/examples/pdf/quickpdfviewer/viewer.qml:7:1: Lib can't be loaded E:\Python311-venv\Lib\site-packages\PySide6\qml\QtQuick\Pdf\pdfquickplugin.dll

the pdfquickplugin.dll existing

ldd  libeffectsplugin.so
        libQt6QuickEffects.so.6 => not found

 ldd  libpdfquickplugin.so
       libQt6PdfQuick.so.6 => not found