I recently upgraded my GWT web application from 2.3 to 2.8.1. Application is only up partially but some of the buttons are not working. I see following error in logs.
(TypeError): Cannot read property ‘classname’ of null
Issue is coming from the following line of code:
firstPage.getElement().getParentElement().addClassName(style.button());
Where style is an instance of com.google.gwt.user.cellview.client.SimplePager$Style
Please advise