fixed show balance of 0 if no balance exists

src/components/BalanceHeader.vue

@@ -2,7 +2,7 @@
   <q-card-section class="fit row justify-left content-center items-center q-col-gutter-sm">
     <div class="col-5">
       <div v-if="balance" class="text-h6">
-        Aktueller Stand: {{ balance.balance ? balance.balance.toFixed(2) : '' }} €
+        Aktueller Stand: {{ balance.balance ? balance.balance.toFixed(2) : parseInt('0').toFixed(2) }} €
         <q-badge v-if="isLocked" color="negative" align="top"> gesperrt </q-badge>
       </div>
       <q-spinner v-else color="primary" size="3em" />

src/components/Widget.vue

@@ -21,7 +21,7 @@ export default defineComponent({
       void store.getBalance(mainStore.currentUser);
     });
 
-    const balance = computed(() => store.balance?.balance || NaN);
+    const balance = computed(() => store.balance?.balance || 0);
 
     return { balance };
   },

src/pages/BalanceOverviewPage.vue

@@ -112,7 +112,7 @@ export default defineComponent({
       loading.value = false;
     }
 
-    const balance = computed(() => store.balance?.balance || NaN);
+    const balance = computed(() => store.balance?.balance || 0);
 
     const columns = [
       {