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Vaadin Forum3. Vaadin 6, 7, 8

Nullpointer in ConnectorTracker

C. Bosch
6 years ago Feb 15, 2016 11:01am

I got this while debugging a application with FileUploadHandler in eclipse with Vaadin 7.4.1...
Maybe a null check is required?

java.lang.NullPointerException
    at com.vaadin.ui.ConnectorTracker.cleanStreamVariable(ConnectorTracker.java:845)
    at com.vaadin.server.communication.FileUploadHandler$1.run(FileUploadHandler.java:695)
    at com.vaadin.server.VaadinSession.accessSynchronously(VaadinSession.java:1324)
    at com.vaadin.server.communication.FileUploadHandler.cleanStreamVariable(FileUploadHandler.java:692)
    at com.vaadin.server.communication.FileUploadHandler.handleFileUploadValidationAndData(FileUploadHandler.java:459)
    at com.vaadin.server.communication.FileUploadHandler.doHandleXhrFilePost(FileUploadHandler.java:510)
    at com.vaadin.server.communication.FileUploadHandler.handleRequest(FileUploadHandler.java:291)
    at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1409)
    at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:364)