ERROR  [Vue warn]: The "data" option should be a function that returns a per-instance value in component definitions.                                                                                                              21:12:27


 ERROR  [Vue warn]: Property or method "isActive" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property. See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.

found in

---> <Navigation> at components/Navigation.vue
       <Pages/index.vue> at pages/index.vue
         <Nuxt>
           <Layouts/default.vue> at layouts/default.vue
             <Root>