--- a/eric6/WebBrowser/Network/EricSchemeHandler.py Sat Mar 06 10:00:52 2021 +0100 +++ b/eric6/WebBrowser/Network/EricSchemeHandler.py Sun Mar 28 15:00:11 2021 +0200 @@ -112,8 +112,8 @@ contents = self.__errorPage() self.__buffer.setData(contents.encode("utf-8")) - self.__buffer.open(QIODevice.ReadOnly) - self.open(QIODevice.ReadOnly) + self.__buffer.open(QIODevice.OpenModeFlag.ReadOnly) + self.open(QIODevice.OpenModeFlag.ReadOnly) self.readyRead.emit()