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<param name="url" value="jdbc:h2:${rep.home}/version/db;AUTO_SERVER=TRUE" />

Green screen applauncher

If after upgrade or installation you experience a "green-screen" upon login (i.e. all apps are missing from the launcher) then most likely you have a module in your classpath which has not been migrated as part of the Vaadin 8 upgrade. In the log you will see "Definition not found" warnings due to the UI Framework not being able to start normally. This can be an issue when using third-party or add-on modules. Please read Vaadin 8 and custom modules.

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