Could not find QtWebEngineProcess.exe

Hello, I'm trying to use QtWebEngine with PyQt5, but there is some problem.
If the library path includes Non-CP1252 characters, when I'm trying to use QWebEngineView, there is a message "Could not find QtWebEngineProcess.exe" and the program silently crashes without any python exceptions.

The following paths are broken when the path includes Non-CP1252 characters:
QLibraryInfo.location(QLibraryInfo.PrefixPath))
QLibraryInfo.location(QLibraryInfo.LibraryExecutab lesPath))

Is there a way or workaround to solve this?