editor/src/pages/Conflicts.vue

<template>
    <div class="fullscreen bg-blue text-white text-center q-pa-md flex flex-center">
        <div>
            <div style="font-size: 10vh">Conflicts</div>
            <div class="text-h2" style="opacity:.4">Another editor is already opened.</div>
        </div>
    </div>
</template>

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