I use the latest version of vaadin and I get an error that I do not understand. The specificity of my project is that I made it migrate from vaadin 7 to 8; so it has the packages "compatibility"
I get the following error message:
java.lang.NoSuchMethodError: com.vaadin.ui.MenuBar.addItem (Ljava / lang / String;) Lcom / vaadin / ui / MenuBar $ MenuItem;
I use the latest version of vaadin and I get an error that I do not understand. The specificity of my project is that I made it migrate from vaadin 7 to 8; so it has the packages "compatibility" I get the following error message: java.lang.NoSuchMethodError: com.vaadin.ui.MenuBar.addItem (Ljava / lang / String;) Lcom / vaadin / ui / MenuBar $ MenuItem;
How can I solve this problem?