diff --git a/app/Clients/ZonneplanPriceClient.php b/app/Clients/ZonneplanPriceClient.php
index 9e9d888..837ca5f 100644
--- a/app/Clients/ZonneplanPriceClient.php
+++ b/app/Clients/ZonneplanPriceClient.php
@@ -72,7 +72,7 @@ class ZonneplanPriceClient implements PriceClient
             ]);
 
             throw new Exception(
-                "Kon energieprijzen niet ophalen voor {$path}",
+                __('errors.client_error'),
                 previous: $e,
             );
         }
diff --git a/lang/en/auth.php b/lang/en/auth.php
new file mode 100644
index 0000000..6598e2c
--- /dev/null
+++ b/lang/en/auth.php
@@ -0,0 +1,20 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Authentication Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | The following language lines are used during authentication for various
+    | messages that we need to display to the user. You are free to modify
+    | these language lines according to your application's requirements.
+    |
+    */
+
+    'failed' => 'These credentials do not match our records.',
+    'password' => 'The provided password is incorrect.',
+    'throttle' => 'Too many login attempts. Please try again in :seconds seconds.',
+
+];
diff --git a/lang/en/pagination.php b/lang/en/pagination.php
new file mode 100644
index 0000000..d481411
--- /dev/null
+++ b/lang/en/pagination.php
@@ -0,0 +1,19 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Pagination Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | The following language lines are used by the paginator library to build
+    | the simple pagination links. You are free to change them to anything
+    | you want to customize your views to better match your application.
+    |
+    */
+
+    'previous' => '&laquo; Previous',
+    'next' => 'Next &raquo;',
+
+];
diff --git a/lang/en/passwords.php b/lang/en/passwords.php
new file mode 100644
index 0000000..fad3a7d
--- /dev/null
+++ b/lang/en/passwords.php
@@ -0,0 +1,22 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Password Reset Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | The following language lines are the default lines which match reasons
+    | that are given by the password broker for a password update attempt
+    | outcome such as failure due to an invalid password / reset token.
+    |
+    */
+
+    'reset' => 'Your password has been reset.',
+    'sent' => 'We have emailed your password reset link.',
+    'throttled' => 'Please wait before retrying.',
+    'token' => 'This password reset token is invalid.',
+    'user' => "We can't find a user with that email address.",
+
+];
diff --git a/lang/en/validation.php b/lang/en/validation.php
new file mode 100644
index 0000000..185720d
--- /dev/null
+++ b/lang/en/validation.php
@@ -0,0 +1,201 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Validation Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | The following language lines contain the default error messages used by
+    | the validator class. Some of these rules have multiple versions such
+    | as the size rules. Feel free to tweak each of these messages here.
+    |
+    */
+
+    'accepted' => 'The :attribute field must be accepted.',
+    'accepted_if' => 'The :attribute field must be accepted when :other is :value.',
+    'active_url' => 'The :attribute field must be a valid URL.',
+    'after' => 'The :attribute field must be a date after :date.',
+    'after_or_equal' => 'The :attribute field must be a date after or equal to :date.',
+    'alpha' => 'The :attribute field must only contain letters.',
+    'alpha_dash' => 'The :attribute field must only contain letters, numbers, dashes, and underscores.',
+    'alpha_num' => 'The :attribute field must only contain letters and numbers.',
+    'any_of' => 'The :attribute field is invalid.',
+    'array' => 'The :attribute field must be an array.',
+    'ascii' => 'The :attribute field must only contain single-byte alphanumeric characters and symbols.',
+    'base64' => 'The :attribute field must be a valid Base64 string.',
+    'before' => 'The :attribute field must be a date before :date.',
+    'before_or_equal' => 'The :attribute field must be a date before or equal to :date.',
+    'between' => [
+        'array' => 'The :attribute field must have between :min and :max items.',
+        'file' => 'The :attribute field must be between :min and :max kilobytes.',
+        'numeric' => 'The :attribute field must be between :min and :max.',
+        'string' => 'The :attribute field must be between :min and :max characters.',
+    ],
+    'boolean' => 'The :attribute field must be true or false.',
+    'can' => 'The :attribute field contains an unauthorized value.',
+    'confirmed' => 'The :attribute field confirmation does not match.',
+    'contains' => 'The :attribute field is missing a required value.',
+    'current_password' => 'The password is incorrect.',
+    'date' => 'The :attribute field must be a valid date.',
+    'date_equals' => 'The :attribute field must be a date equal to :date.',
+    'date_format' => 'The :attribute field must match the format :format.',
+    'decimal' => 'The :attribute field must have :decimal decimal places.',
+    'declined' => 'The :attribute field must be declined.',
+    'declined_if' => 'The :attribute field must be declined when :other is :value.',
+    'different' => 'The :attribute field and :other must be different.',
+    'digits' => 'The :attribute field must be :digits digits.',
+    'digits_between' => 'The :attribute field must be between :min and :max digits.',
+    'dimensions' => 'The :attribute field has invalid image dimensions.',
+    'distinct' => 'The :attribute field has a duplicate value.',
+    'doesnt_contain' => 'The :attribute field must not contain any of the following: :values.',
+    'doesnt_end_with' => 'The :attribute field must not end with one of the following: :values.',
+    'doesnt_start_with' => 'The :attribute field must not start with one of the following: :values.',
+    'email' => 'The :attribute field must be a valid email address.',
+    'encoding' => 'The :attribute field must be encoded in :encoding.',
+    'ends_with' => 'The :attribute field must end with one of the following: :values.',
+    'enum' => 'The selected :attribute is invalid.',
+    'exists' => 'The selected :attribute is invalid.',
+    'extensions' => 'The :attribute field must have one of the following extensions: :values.',
+    'file' => 'The :attribute field must be a file.',
+    'filled' => 'The :attribute field must have a value.',
+    'gt' => [
+        'array' => 'The :attribute field must have more than :value items.',
+        'file' => 'The :attribute field must be greater than :value kilobytes.',
+        'numeric' => 'The :attribute field must be greater than :value.',
+        'string' => 'The :attribute field must be greater than :value characters.',
+    ],
+    'gte' => [
+        'array' => 'The :attribute field must have :value items or more.',
+        'file' => 'The :attribute field must be greater than or equal to :value kilobytes.',
+        'numeric' => 'The :attribute field must be greater than or equal to :value.',
+        'string' => 'The :attribute field must be greater than or equal to :value characters.',
+    ],
+    'hex_color' => 'The :attribute field must be a valid hexadecimal color.',
+    'image' => 'The :attribute field must be an image.',
+    'in' => 'The selected :attribute is invalid.',
+    'in_array' => 'The :attribute field must exist in :other.',
+    'in_array_keys' => 'The :attribute field must contain at least one of the following keys: :values.',
+    'integer' => 'The :attribute field must be an integer.',
+    'ip' => 'The :attribute field must be a valid IP address.',
+    'ipv4' => 'The :attribute field must be a valid IPv4 address.',
+    'ipv6' => 'The :attribute field must be a valid IPv6 address.',
+    'json' => 'The :attribute field must be a valid JSON string.',
+    'list' => 'The :attribute field must be a list.',
+    'lowercase' => 'The :attribute field must be lowercase.',
+    'lt' => [
+        'array' => 'The :attribute field must have less than :value items.',
+        'file' => 'The :attribute field must be less than :value kilobytes.',
+        'numeric' => 'The :attribute field must be less than :value.',
+        'string' => 'The :attribute field must be less than :value characters.',
+    ],
+    'lte' => [
+        'array' => 'The :attribute field must not have more than :value items.',
+        'file' => 'The :attribute field must be less than or equal to :value kilobytes.',
+        'numeric' => 'The :attribute field must be less than or equal to :value.',
+        'string' => 'The :attribute field must be less than or equal to :value characters.',
+    ],
+    'mac_address' => 'The :attribute field must be a valid MAC address.',
+    'max' => [
+        'array' => 'The :attribute field must not have more than :max items.',
+        'file' => 'The :attribute field must not be greater than :max kilobytes.',
+        'numeric' => 'The :attribute field must not be greater than :max.',
+        'string' => 'The :attribute field must not be greater than :max characters.',
+    ],
+    'max_digits' => 'The :attribute field must not have more than :max digits.',
+    'mimes' => 'The :attribute field must be a file of type: :values.',
+    'mimetypes' => 'The :attribute field must be a file of type: :values.',
+    'min' => [
+        'array' => 'The :attribute field must have at least :min items.',
+        'file' => 'The :attribute field must be at least :min kilobytes.',
+        'numeric' => 'The :attribute field must be at least :min.',
+        'string' => 'The :attribute field must be at least :min characters.',
+    ],
+    'min_digits' => 'The :attribute field must have at least :min digits.',
+    'missing' => 'The :attribute field must be missing.',
+    'missing_if' => 'The :attribute field must be missing when :other is :value.',
+    'missing_unless' => 'The :attribute field must be missing unless :other is :value.',
+    'missing_with' => 'The :attribute field must be missing when :values is present.',
+    'missing_with_all' => 'The :attribute field must be missing when :values are present.',
+    'multiple_of' => 'The :attribute field must be a multiple of :value.',
+    'not_in' => 'The selected :attribute is invalid.',
+    'not_regex' => 'The :attribute field format is invalid.',
+    'numeric' => 'The :attribute field must be a number.',
+    'password' => [
+        'letters' => 'The :attribute field must contain at least one letter.',
+        'mixed' => 'The :attribute field must contain at least one uppercase and one lowercase letter.',
+        'numbers' => 'The :attribute field must contain at least one number.',
+        'symbols' => 'The :attribute field must contain at least one symbol.',
+        'uncompromised' => 'The given :attribute has appeared in a data leak. Please choose a different :attribute.',
+    ],
+    'present' => 'The :attribute field must be present.',
+    'present_if' => 'The :attribute field must be present when :other is :value.',
+    'present_unless' => 'The :attribute field must be present unless :other is :value.',
+    'present_with' => 'The :attribute field must be present when :values is present.',
+    'present_with_all' => 'The :attribute field must be present when :values are present.',
+    'prohibited' => 'The :attribute field is prohibited.',
+    'prohibited_if' => 'The :attribute field is prohibited when :other is :value.',
+    'prohibited_if_accepted' => 'The :attribute field is prohibited when :other is accepted.',
+    'prohibited_if_declined' => 'The :attribute field is prohibited when :other is declined.',
+    'prohibited_unless' => 'The :attribute field is prohibited unless :other is in :values.',
+    'prohibits' => 'The :attribute field prohibits :other from being present.',
+    'regex' => 'The :attribute field format is invalid.',
+    'required' => 'The :attribute field is required.',
+    'required_array_keys' => 'The :attribute field must contain entries for: :values.',
+    'required_if' => 'The :attribute field is required when :other is :value.',
+    'required_if_accepted' => 'The :attribute field is required when :other is accepted.',
+    'required_if_declined' => 'The :attribute field is required when :other is declined.',
+    'required_unless' => 'The :attribute field is required unless :other is in :values.',
+    'required_with' => 'The :attribute field is required when :values is present.',
+    'required_with_all' => 'The :attribute field is required when :values are present.',
+    'required_without' => 'The :attribute field is required when :values is not present.',
+    'required_without_all' => 'The :attribute field is required when none of :values are present.',
+    'same' => 'The :attribute field must match :other.',
+    'size' => [
+        'array' => 'The :attribute field must contain :size items.',
+        'file' => 'The :attribute field must be :size kilobytes.',
+        'numeric' => 'The :attribute field must be :size.',
+        'string' => 'The :attribute field must be :size characters.',
+    ],
+    'starts_with' => 'The :attribute field must start with one of the following: :values.',
+    'string' => 'The :attribute field must be a string.',
+    'timezone' => 'The :attribute field must be a valid timezone.',
+    'unique' => 'The :attribute has already been taken.',
+    'uploaded' => 'The :attribute failed to upload.',
+    'uppercase' => 'The :attribute field must be uppercase.',
+    'url' => 'The :attribute field must be a valid URL.',
+    'ulid' => 'The :attribute field must be a valid ULID.',
+    'uuid' => 'The :attribute field must be a valid UUID.',
+
+    /*
+    |--------------------------------------------------------------------------
+    | Custom Validation Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | Here you may specify custom validation messages for attributes using the
+    | convention "attribute.rule" to name the lines. This makes it quick to
+    | specify a specific custom language line for a given attribute rule.
+    |
+    */
+
+    'custom' => [
+        'attribute-name' => [
+            'rule-name' => 'custom-message',
+        ],
+    ],
+
+    /*
+    |--------------------------------------------------------------------------
+    | Custom Validation Attributes
+    |--------------------------------------------------------------------------
+    |
+    | The following language lines are used to swap our attribute placeholder
+    | with something more reader friendly such as "E-Mail Address" instead
+    | of "email". This simply helps us make our message more expressive.
+    |
+    */
+
+    'attributes' => [],
+
+];
diff --git a/lang/nl/errors.php b/lang/nl/errors.php
new file mode 100644
index 0000000..16bec2e
--- /dev/null
+++ b/lang/nl/errors.php
@@ -0,0 +1,5 @@
+<?php
+
+return [
+    'client_error' => 'Kon energieprijzen niet ophalen'
+];
diff --git a/resources/js/components/Error.vue b/resources/js/components/Error.vue
new file mode 100644
index 0000000..b3e373d
--- /dev/null
+++ b/resources/js/components/Error.vue
@@ -0,0 +1,11 @@
+<script setup lang="ts">
+defineProps<{
+    message: string;
+}>();
+</script>
+
+<template>
+    <div class="rounded-xl bg-red-300 p-2 font-semibold text-red-900 shadow-md">
+        {{ message }}
+    </div>
+</template>
diff --git a/resources/js/features/dashboard/components/Price.vue b/resources/js/features/dashboard/components/Price.vue
index d532951..3bb69ca 100644
--- a/resources/js/features/dashboard/components/Price.vue
+++ b/resources/js/features/dashboard/components/Price.vue
@@ -3,7 +3,7 @@ import moment from 'moment';
 
 defineProps<{
     label: string;
-    price: number | null | undefined;
+    price: number;
     time: moment.Moment | string;
 }>();
 </script>
diff --git a/resources/js/features/dashboard/pages/Index.vue b/resources/js/features/dashboard/pages/Index.vue
index 135df27..7243444 100644
--- a/resources/js/features/dashboard/pages/Index.vue
+++ b/resources/js/features/dashboard/pages/Index.vue
@@ -4,6 +4,7 @@ import moment from 'moment';
 import { onMounted } from 'vue';
 import Price from '../components/Price.vue';
 import useDashboardViewModel from '../viewmodels/DashboardViewModel';
+import Error from '@/components/Error.vue';
 
 const model = useDashboardViewModel();
 
@@ -16,12 +17,15 @@ onMounted(() => {
     <h1 class="mb-4 text-3xl font-black text-primary">
         {{ t('dashboard.title') }}
     </h1>
-    <div class="mb-4 flex flex-col gap-2">
+    <div class="mb-4 flex flex-col gap-2" v-if="model.dashboardData.value">
         <h2 class="text-2xl font-black text-primary">
             {{ t('dashboard.electricity') }}
         </h2>
         <div class="flex flex-wrap gap-4">
             <Price
+                v-if="
+                    model.dashboardData.value?.electricity.totalPriceTaxIncluded
+                "
                 :label="t('dashboard.current_electricity_price')"
                 :price="
                     model.dashboardData.value?.electricity.totalPriceTaxIncluded
@@ -29,6 +33,10 @@ onMounted(() => {
                 :time="moment(model.dashboardData.value?.electricity.startDate)"
             />
             <Price
+                v-if="
+                    model.dashboardData.value?.electricityCheapest
+                        ?.totalPriceTaxIncluded
+                "
                 :label="t('dashboard.cheapest_electricity_price')"
                 :price="
                     model.dashboardData.value?.electricityCheapest
@@ -42,6 +50,10 @@ onMounted(() => {
                 "
             />
             <Price
+                v-if="
+                    model.dashboardData.value?.electricityDurable
+                        ?.totalPriceTaxIncluded
+                "
                 :label="t('dashboard.durable_electricity_price')"
                 :price="
                     model.dashboardData.value?.electricityDurable
@@ -55,6 +67,10 @@ onMounted(() => {
                 "
             />
             <Price
+                v-if="
+                    model.dashboardData.value?.electricityPriciest
+                        ?.totalPriceTaxIncluded
+                "
                 :label="t('dashboard.priciest_electricity_price')"
                 :price="
                     model.dashboardData.value?.electricityPriciest
@@ -69,12 +85,13 @@ onMounted(() => {
             />
         </div>
     </div>
-    <div class="mb-4 flex flex-col gap-2">
+    <div class="mb-4 flex flex-col gap-2" v-if="model.dashboardData.value">
         <h2 class="text-2xl font-black text-primary">
             {{ t('dashboard.gas') }}
         </h2>
         <div class="flex flex-wrap gap-4">
             <Price
+                v-if="model.dashboardData.value?.gas.totalPriceTaxIncluded"
                 :label="t('dashboard.current_gas_price')"
                 :price="model.dashboardData.value?.gas.totalPriceTaxIncluded"
                 :time="
@@ -84,6 +101,10 @@ onMounted(() => {
                 "
             />
             <Price
+                v-if="
+                    model.dashboardData.value?.gasCheapest
+                        ?.totalPriceTaxIncluded
+                "
                 :label="t('dashboard.cheapest_gas_price')"
                 :price="
                     model.dashboardData.value?.gasCheapest
@@ -96,6 +117,10 @@ onMounted(() => {
                 "
             />
             <Price
+                v-if="
+                    model.dashboardData.value?.gasPriciest
+                        ?.totalPriceTaxIncluded
+                "
                 :label="t('dashboard.priciest_gas_price')"
                 :price="
                     model.dashboardData.value?.gasPriciest
@@ -109,4 +134,5 @@ onMounted(() => {
             />
         </div>
     </div>
+    <Error :message="model.error.value" v-if="model.error.value" />
 </template>
diff --git a/resources/js/features/dashboard/viewmodels/DashboardViewModel.ts b/resources/js/features/dashboard/viewmodels/DashboardViewModel.ts
index 5108f14..ee85494 100644
--- a/resources/js/features/dashboard/viewmodels/DashboardViewModel.ts
+++ b/resources/js/features/dashboard/viewmodels/DashboardViewModel.ts
@@ -4,6 +4,7 @@ import DashboardData = App.Features.Dashboard.Data.DashboardData;
 
 export default function useDashboardViewModel() {
     const isLoading = ref<boolean>(false);
+    const error = ref<string>();
     const dashboardData = ref<DashboardData>();
 
     function getDashboardData() {
@@ -15,8 +16,11 @@ export default function useDashboardViewModel() {
             .then((res) => {
                 dashboardData.value = res.data;
             })
+            .catch((err) => {
+                error.value = err.response.data.message;
+            })
             .finally(() => (isLoading.value = false));
     }
 
-    return { isLoading, dashboardData, getDashboardData };
+    return { isLoading, dashboardData, error, getDashboardData };
 }
diff --git a/resources/js/features/history/components/Chart.vue b/resources/js/features/history/components/Chart.vue
index 29b2f87..c09101f 100644
--- a/resources/js/features/history/components/Chart.vue
+++ b/resources/js/features/history/components/Chart.vue
@@ -24,7 +24,7 @@ ChartJS.register(
 
 export interface PricePoint {
     label: string;
-    value: number;
+    value: number | null;
 }
 
 const props = defineProps<{
diff --git a/resources/js/lang/translations/index.ts b/resources/js/lang/translations/index.ts
index 21c29f5..28a54c9 100644
--- a/resources/js/lang/translations/index.ts
+++ b/resources/js/lang/translations/index.ts
@@ -1,5 +1,5 @@
-import nl from "./nl";
+import nl from './nl';
 
 export default {
-    nl
-}
+    nl: { translation: nl },
+};
diff --git a/resources/js/lang/translations/nl/dashboard.json b/resources/js/lang/translations/nl/dashboard.json
index cc61669..1b3e380 100644
--- a/resources/js/lang/translations/nl/dashboard.json
+++ b/resources/js/lang/translations/nl/dashboard.json
@@ -1,3 +1,12 @@
 {
-    "title": "Overzicht"
+    "title": "Overzicht",
+    "electricity": "Elektriciteit",
+    "gas": "Gas",
+    "current_electricity_price": "Actuele elektriciteitsprijs",
+    "cheapest_electricity_price": "Goedkoopste elektriciteitsprijs",
+    "durable_electricity_price": "Duurzaamste elektriciteitsprijs",
+    "priciest_electricity_price": "Duurste elektriciteitsprijs",
+    "current_gas_price": "Actuele gasprijs",
+    "cheapest_gas_price": "Goedkoopste gasprijs",
+    "priciest_gas_price": "Duurste gasprijs"
 }
diff --git a/resources/js/lang/translations/nl/history.json b/resources/js/lang/translations/nl/history.json
new file mode 100644
index 0000000..29bf569
--- /dev/null
+++ b/resources/js/lang/translations/nl/history.json
@@ -0,0 +1,3 @@
+{
+    "title": "Prijshistorie"
+}
diff --git a/resources/js/lang/translations/nl/index.ts b/resources/js/lang/translations/nl/index.ts
index f483f3c..0b04b45 100644
--- a/resources/js/lang/translations/nl/index.ts
+++ b/resources/js/lang/translations/nl/index.ts
@@ -1,5 +1,7 @@
 import dashboard from './dashboard.json';
+import history from './history.json';
 
 export default {
     dashboard,
+    history,
 };
diff --git a/resources/js/layouts/Layout.vue b/resources/js/layouts/Layout.vue
index bbd2106..cb12621 100644
--- a/resources/js/layouts/Layout.vue
+++ b/resources/js/layouts/Layout.vue
@@ -2,17 +2,33 @@
 import { t } from 'i18next';
 import dashboard from '@/routes/dashboard';
 import history from '@/routes/history';
+import { Link, router, usePage } from '@inertiajs/vue3';
+import { computed } from 'vue';
+
+const page = usePage();
+const currentUrl = computed(() => page.url);
+
+const navItems = [
+    { href: dashboard.index().url, label: 'dashboard.title' },
+    { href: history.index().url, label: 'history.title' },
+];
 </script>
 
 <template>
     <nav class="fixed top-0 bottom-0 left-0 w-64 bg-primary p-4">
         <img src="/storage/logo.svg" class="mb-4 mix-blend-plus-lighter" />
-        <ul class="flex-1 gap-4">
-            <li>
-                <a :href="dashboard.index().url">{{ t('dashboard.title') }}</a>
-            </li>
-            <li>
-                <a :href="history.index().url">{{ t('history.title') }}</a>
+        <ul class="flex flex-1 flex-col gap-2">
+            <li v-for="item in navItems" :key="item.href">
+                <Link
+                    :href="item.href"
+                    :class="
+                        currentUrl === item.href
+                            ? 'block rounded-lg bg-white/10 p-2 font-semibold text-white'
+                            : 'block rounded-lg p-2 text-white/70 hover:bg-white/5 hover:text-white'
+                    "
+                >
+                    {{ t(item.label) }}
+                </Link>
             </li>
         </ul>
     </nav>