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in context with path [/POS] threw exception [com.vaadin.server.ServiceExcep

hadi abou hamzeh
6 years ago Oct 25, 2015 11:25am

Dear all
I have main class that extends UI 'MainUI' i created a new vaadin project thats extends the MainUI whe i launch it i got that error

SEVERE: Servlet.service() for servlet [vc.pos.PosUI$Servlet] in context with path [/POS] threw exception [com.vaadin.server.ServiceException: com.vaadin.server.ServiceException: vc.pos.PosUI does not implement UI] with root cause
com.vaadin.server.ServiceException: vc.pos.PosUI does not implement UI at com.vaadin.server.ServletPortletHelper.verifyUIClass(ServletPortletHelper.java:72)
i do compiled widgetset and resloved ivy
thanks in advance