Added redirecting to login page when user is not logged in

frontend/src/api/api.ts

@@ -31,4 +31,15 @@ api.interceptors.request.use(
   (error) => Promise.reject(error)
 );
 
+// INTERCEPTOR: Global error handling
+api.interceptors.response.use(
+  (response) => response,
+  (error) => {
+    if (error.response?.status === 401) {
+      window.location.href = "/login";
+    }
+    return Promise.reject(error);
+  }
+);
+
 export default api;