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java.lang.NullPointerException: 	at com.whitestein.resdev.vaadin.util.Utils.log(Utils.java:86)	at com.whitestein.resdev.vaadin.core.LspsUI.handleError(LspsUI.java:378)	at com.whitestein.resdev.vaadin.core.LspsUI.error(LspsUI.java:384)	at com.vaadin.ui.UI$3.handleError(UI.java:1429)	at com.vaadin.server.VaadinSession$FutureAccess.handleError(VaadinSession.java:150)	at com.vaadin.server.VaadinService.runPendingAccessTasks(VaadinService.java:1821)	at com.vaadin.server.VaadinSession.unlock(VaadinSession.java:1019)	at com.vaadin.server.VaadinService.ensureAccessQueuePurged(VaadinService.java:1779)	at com.vaadin.server.VaadinService.accessSession(VaadinService.java:1745)	at com.vaadin.server.VaadinSession.access(VaadinSession.java:1409)	at com.vaadin.ui.UI.access(UI.java:1405)	at org.vaadin.addon.oauthpopup.OAuthPopupOpener.fireAuthSuccessful(OAuthPopupOpener.java:88)	at org.vaadin.addon.oauthpopup.OAuthPopupOpener.access$000(OAuthPopupOpener.java:12)	at org.vaadin.addon.oauthpopup.OAuthPopupOpener$1.authSuccessful(OAuthPopupOpener.java:46)	at org.vaadin.addon.oauthpopup.OAuthData.fireSuccess(OAuthData.java:213)	at org.vaadin.addon.oauthpopup.OAuthData.setVerifier(OAuthData.java:152)	at org.vaadin.addon.oauthpopup.OAuthCallbackRequestHandler.handleRequest(OAuthCallbackRequestHandler.java:53)	at com.vaadin.server.communication.SessionRequestHandler.handleRequest(SessionRequestHandler.java:63)	at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1408)	at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:350)