BUG: Fix crash on exit when chart view has been opened
Created by: vovythevov
The QWebEngineView would crash on exit. This seems related to https://bugreports.qt.io/browse/QTBUG-50160?focusedCommentId=305211&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-305211 The work-around is to delete manually the QWebEngineView (in this case the qMRMLChartView) before the application has exited.
See issue #4479 - https://issues.slicer.org/view.php?id=4479