line 140, in <module>
ui.setupUi(MainWindow)
line 15, in setupUi
self.ui.mdiArea = QtWidgets.QMdiArea()
AttributeError: 'Ui_MainWindow' object has no attribute 'ui'
also ui = Ui_MainWindow() - ui.setupUi(MainWindow) When you remove these two, the window opens. I would like to solve your mistake but now I will go to sleep
ui.setupUi(MainWindow)
line 15, in setupUi
self.ui.mdiArea = QtWidgets.QMdiArea()
AttributeError: 'Ui_MainWindow' object has no attribute 'ui'
also ui = Ui_MainWindow() - ui.setupUi(MainWindow) When you remove these two, the window opens. I would like to solve your mistake but now I will go to sleep