[Python] pyqtgraph not working on example in pythonGUIs website - PySide6 with pyqtgraph

I am trying the example from PythonGUIs website using this script:

from PySide6.QtWidgets import QApplication, QMainWindow
import pyqtgraph as pg
import sys

class MainWindow(QMainWindow):

def __init__(self):
super().__init__()

self.graphWidget = pg.PlotWidget()
self.setCentralWidget(self.graphWidget)

hour = [1,2,3,4,5,6,7,8,9,10]
temperature = [30,32,34,32,33,31,29,32,35,45]

# plot data: x, y values
self.graphWidget.plot(hour, temperature)


app = QApplication(sys.argv)
w = MainWindow()
w.show()
app.exec()


For some reason its just giving me a blank ui plot

Are the versions not compatible or is there something wrong somewhere?

Versions:

Python = 3.13.5

pyqtgraph = 0.13.7

PySide6 = 6.9.1

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