Hi. When i start tomcat i get this message:
WARNING [main]
org.apache.catalina.session.StandardSession.doReadObject Cannot deserialize session attribute [com.vaadin.flow.server.VaadinSession.com.vaadin.flow.server.startup.ServletDeployer]
for session [2A57B71279ED50464040D0D6CC6F964D]
Anyone knows how to fix this warning? (I think an error NotSerializableException of my class appears because of this warning, i didn’t get this error in Vaadin8)