Error while converting project from Mendix version 8.17 to 9.3

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I am getting the below error while upgrading my project from version 8.17 to 9.3   Mendix.Modeler.Utility.Progress.ProgressException ---> System.NullReferenceException: Object reference not set to an instance of an object.    at Mendix.Modeler.WebUI.Forms.Widgets.EntityWidgets.ListViews.ListView.HasListViewControls(IDocument document) in C:\Users\Autobuild\workspace\AppStudio4.0-Build\modeler\Mendix.Modeler.WebUI\Forms\Widgets\EntityWidgets\ListViews\ListView.cs:line 126    at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)    at Mendix.Modeler.WebUI.Forms.Widgets.EntityWidgets.ListViews.ListView.Mendix.Modeler.Projects.IPostprocess.Postprocess() in C:\Users\Autobuild\workspace\AppStudio4.0-Build\modeler\Mendix.Modeler.WebUI\Forms\Widgets\EntityWidgets\ListViews\ListView.cs:line 123   Tried removing/updating listViewControls widget but the error persists
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