diff --git a/fe/src/boot/axios.ts b/fe/src/boot/axios.ts
index 377a391..e8fa8bd 100644
--- a/fe/src/boot/axios.ts
+++ b/fe/src/boot/axios.ts
@@ -1,6 +1,6 @@
 import { boot } from 'quasar/wrappers';
-import axios, { AxiosInstance } from 'axios';
-import { API_BASE_URL, API_VERSION, API_ENDPOINTS } from 'src/config/api-config';
+import axios from 'axios';
+import { API_BASE_URL } from 'src/config/api-config';
 
 // Create axios instance
 const api = axios.create({
@@ -20,7 +20,7 @@ api.interceptors.request.use(
     return config;
   },
   (error) => {
-    return Promise.reject(error);
+    return Promise.reject(new Error(String(error)));
   }
 );
 
@@ -56,11 +56,11 @@ api.interceptors.response.use(
         localStorage.removeItem('token');
         localStorage.removeItem('refreshToken');
         window.location.href = '/login';
-        return Promise.reject(refreshError);
+        return Promise.reject(new Error(String(refreshError)));
       }
     }
 
-    return Promise.reject(error);
+    return Promise.reject(new Error(String(error)));
   }
 );
 
diff --git a/fe/src/pages/AccountPage.vue b/fe/src/pages/AccountPage.vue
index 4ec021b..a8e99e8 100644
--- a/fe/src/pages/AccountPage.vue
+++ b/fe/src/pages/AccountPage.vue
@@ -259,6 +259,6 @@ const onPreferenceChange = async () => {
 };
 
 onMounted(() => {
-  fetchProfile();
+  void fetchProfile();
 });
 </script>
diff --git a/fe/src/pages/GroupDetailPage.vue b/fe/src/pages/GroupDetailPage.vue
index 4e9e509..33d3414 100644
--- a/fe/src/pages/GroupDetailPage.vue
+++ b/fe/src/pages/GroupDetailPage.vue
@@ -35,7 +35,6 @@
 import { ref, onMounted, computed } from 'vue';
 import { useRoute } from 'vue-router';
 import { apiClient, API_ENDPOINTS } from 'src/config/api';
-import { useAuthStore } from 'stores/auth';
 import { copyToClipboard, useQuasar } from 'quasar';
 
 interface Group {
@@ -52,7 +51,6 @@ const props = defineProps({
 });
 
 const route = useRoute();
-const authStore = useAuthStore();
 const $q = useQuasar();
 
 const group = ref<Group | null>(null);
diff --git a/fe/src/pages/ListDetailPage.vue b/fe/src/pages/ListDetailPage.vue
index 3689299..e41c2c9 100644
--- a/fe/src/pages/ListDetailPage.vue
+++ b/fe/src/pages/ListDetailPage.vue
@@ -245,13 +245,11 @@ const list = ref<List>({
 const loading = ref(true);
 const error = ref<string | null>(null);
 const addingItem = ref(false);
-const pollingInterval = ref<ReturnType<typeof setInterval> | undefined>(undefined);
+const pollingInterval = ref<NodeJS.Timeout | null>(null);
 const lastListUpdate = ref<string | null>(null);
 const lastItemUpdate = ref<string | null>(null);
 
 const newItem = ref<{ name: string; quantity?: string }>({ name: '' });
-const editingItemName = ref('');
-const editingItemQuantity = ref<string | undefined>(undefined);
 
 // OCR related state
 const showOcrDialog = ref(false);
@@ -323,13 +321,13 @@ const checkForUpdates = async () => {
 
 const startPolling = () => {
   // Poll every 15 seconds
-  pollingInterval.value = setInterval(checkForUpdates, 15000);
+  pollingInterval.value = setInterval(() => void checkForUpdates(), 15000);
 };
 
 const stopPolling = () => {
   if (pollingInterval.value) {
     clearInterval(pollingInterval.value);
-    pollingInterval.value = undefined;
+    pollingInterval.value = null;
   }
 };
 
diff --git a/fe/src/pages/ListsPage.vue b/fe/src/pages/ListsPage.vue
index 0163716..05037db 100644
--- a/fe/src/pages/ListsPage.vue
+++ b/fe/src/pages/ListsPage.vue
@@ -196,9 +196,9 @@ const fetchLists = async () => {
 };
 
 onMounted(() => {
-  fetchLists();
-  fetchGroups();
-  fetchGroupName();
+  void fetchLists();
+  void fetchGroups();
+  void fetchGroupName();
 });
 
 const filteredLists = computed(() => {