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I am migrating from Vaadin 6 to Vaadin 7. After deploying to jBoss 7.1.1, I can open the page, but there comes an error (see attachment)
Does anyone know what that means in general and how I could possibly solve it?Thanks in advance
When the Vaadin servlet gets a new request, it tries to find a UI to render. The UI can be defined by the UI parameter for the servlet, or by the UIProvider parameter. Check https://vaadin.com/book/-/page/application.environment.html#application.environment.web-xml for more details.