javax.servlet.ServletException: com.vaadin.server.ServiceException: java.lang.NullPointerException

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via vaadin.com by Unknown author, 1 year ago
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com.vaadin.server.ServiceException: java.lang.NullPointerException
via Stack Overflow by Bendaoud Achraf
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com.vaadin.server.ServiceException: java.lang.NoClassDefFoundError: org/springframework/data/jpa/repository/JpaRepository
java.lang.NullPointerException: 	at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:194)	at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74)	at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)	at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1408)