editor/src/pages/Error404.vue

<template>
    <div class="fullscreen bg-blue text-white text-center q-pa-md flex flex-center">
        <div>
            <div style="font-size: 30vh">404</div>
            <div class="text-h2" style="opacity:.4">Oops. Nothing here...</div>

          <q-btn
              class="q-mt-xl"
              color="white"
              text-color="blue"
              unelevated
              to="/"
              label="Go Home"
              no-caps
          />
        </div>
    </div>
</template>

<script>
export default {
    name: 'Error404'
};
</script>