I'm trying to make a program using
ImportError: cannot import name 'QGraphWidget'
In the documentation it implies that the promoted name can be anything, however, this seems to be untrue (at least at the moment).
Under “Promoted class name”, enter the class name you wish to use (“PlotWidget”, “GraphicsLayoutWidget”, etc).
After re-doing my QGraphicsWidget for the 6th time, I decided to name it one of the example names in the tutorial, which seems to have solved the problem.
In other words name your widget and promoted widget "PlotWidget", "ImageView", "GraphicsLayoutView", or "GraphicsView". (Please keep in mind I have only tested "PlotWidget".)