small fixes

vue3/src/pages/404Page.vue

@@ -0,0 +1,24 @@
+<script setup lang="ts">
+
+</script>
+
+<template>
+<v-container>
+    <v-row>
+        <v-col class="text-center">
+            <h1>404</h1>
+            Oops, there is nothing here.
+        </v-col>
+    </v-row>
+
+    <v-row>
+        <v-col class="text-center">
+            <v-btn :to="{name: 'StartPage'}">{{$t('Home')}}</v-btn>
+        </v-col>
+    </v-row>
+</v-container>
+</template>
+
+<style scoped>
+
+</style>