Traceback (most recent call last): File "C:/GitClones/OpenGL2Dthread/OpenGL 2D Template/OpenGL_2D_Main_GUI.py", line 178, in Spinit thread.started.connect(worker.rotate,(self.glwindow1)) File "C:\Program Files\JetBrains\PyCharm 2018.2.1\helpers\pydev\_pydev_bundle\pydev_monkey_qt.py", line 147, in connect return self._signal.connect(func, *args, **kwargs) TypeError: Qt.ConnectionType expected, not 'method'