There are several wrong signatures in QtCore.pyi. This time, it's about the following:

def qCritical(arg__1: bytes) -> None: ...
def qDebug(arg__1: bytes) -> None: ...
def qFatal(arg__1: bytes) -> None: ...
def qWarning(arg__1: bytes) -> None: ...

In all of them, arg__1 should be a str and probably named message.

As a side note, why is there no qInfo there in QtCore?