(0xC0000409) error when trying to get text from a combobox in pyqt5

I'm making a simple pyqt5 python application. When I either try read the selected position from a combobox or setPixmap I get a -1073740791 (0xC0000409) exit code

I've tried googling this problem and I couldn't find anything more than the fact that it is a stack buffer overflow

def serialCon():
    currPort = str(dlg.portList.currentText())
    currBaud = str(dlg.baudRates.currentText())
    print(currBaud)
    print(currPort)


def mapImport():
    options = QFileDialog.Options()
    options |= QFileDialog.DontUseNativeDialog
    fileName, _ = QFileDialog.getOpenFileName(None, "QFileDialog.getOpenFileName()", "",
                                          "All Files (*)", options=options)
    if fileName:
        pixmap = fileName
        dlg.mapLbl.setPixmap(pixmap)

I want to display the image and print the selected combobox values.