diff --git a/server/api/externalapi.ts b/server/api/externalapi.ts
index 6ca4c1fd..2a1d9495 100644
--- a/server/api/externalapi.ts
+++ b/server/api/externalapi.ts
@@ -1,6 +1,5 @@
 import axios, { AxiosInstance, AxiosRequestConfig } from 'axios';
 import NodeCache from 'node-cache';
-import logger from '../logger';
 
 // 5 minute default TTL (in seconds)
 const DEFAULT_TTL = 300;
@@ -66,9 +65,6 @@ class ExternalAPI {
 
     if (cachedItem) {
       const keyTtl = this.cache?.getTtl(cacheKey) ?? 0;
-      logger.debug(`Loaded item from cache: ${cacheKey}`, {
-        keyTtl,
-      });
 
       // If the item has passed our rolling check, fetch again in background
       if (
diff --git a/src/components/Settings/RadarrModal/index.tsx b/src/components/Settings/RadarrModal/index.tsx
index 992d9f3e..2ba6b61a 100644
--- a/src/components/Settings/RadarrModal/index.tsx
+++ b/src/components/Settings/RadarrModal/index.tsx
@@ -50,6 +50,8 @@ const messages = defineMessages({
   loadingrootfolders: 'Loading root folders…',
   testFirstRootFolders: 'Test connection to load root folders',
   preventSearch: 'Disable Auto-Search',
+  validationApplicationUrl: 'You must provide a valid URL',
+  validationApplicationUrlTrailingSlash: 'URL must not end in a trailing slash',
 });
 
 interface TestResponse {
@@ -105,6 +107,18 @@ const RadarrModal: React.FC<RadarrModalProps> = ({
     minimumAvailability: Yup.string().required(
       intl.formatMessage(messages.validationMinimumAvailabilityRequired)
     ),
+    externalUrl: Yup.string()
+      .url(intl.formatMessage(messages.validationApplicationUrl))
+      .test(
+        'no-trailing-slash',
+        intl.formatMessage(messages.validationApplicationUrlTrailingSlash),
+        (value) => {
+          if (value?.substr(value.length - 1) === '/') {
+            return false;
+          }
+          return true;
+        }
+      ),
   });
 
   const testConnection = useCallback(
diff --git a/src/components/Settings/SettingsMain.tsx b/src/components/Settings/SettingsMain.tsx
index 6975a18c..3d51ef2e 100644
--- a/src/components/Settings/SettingsMain.tsx
+++ b/src/components/Settings/SettingsMain.tsx
@@ -39,6 +39,8 @@ const messages = defineMessages({
     'Allows Overseerr to correctly register client IP addresses behind a proxy (Overseerr must be reloaded for changes to take effect)',
   localLogin: 'Enable Local User Sign-In',
   validationApplicationTitle: 'You must provide an application title',
+  validationApplicationUrl: 'You must provide a valid URL',
+  validationApplicationUrlTrailingSlash: 'URL must not end in a trailing slash',
 });
 
 const SettingsMain: React.FC = () => {
@@ -52,6 +54,18 @@ const SettingsMain: React.FC = () => {
     applicationTitle: Yup.string().required(
       intl.formatMessage(messages.validationApplicationTitle)
     ),
+    applicationUrl: Yup.string()
+      .url(intl.formatMessage(messages.validationApplicationUrl))
+      .test(
+        'no-trailing-slash',
+        intl.formatMessage(messages.validationApplicationUrlTrailingSlash),
+        (value) => {
+          if (value?.substr(value.length - 1) === '/') {
+            return false;
+          }
+          return true;
+        }
+      ),
   });
 
   const regenerate = async () => {
@@ -200,6 +214,9 @@ const SettingsMain: React.FC = () => {
                         placeholder="https://os.example.com"
                       />
                     </div>
+                    {errors.applicationUrl && touched.applicationUrl && (
+                      <div className="error">{errors.applicationUrl}</div>
+                    )}
                   </div>
                 </div>
                 <div className="form-row">
diff --git a/src/components/Settings/SonarrModal/index.tsx b/src/components/Settings/SonarrModal/index.tsx
index 198de910..36816ed6 100644
--- a/src/components/Settings/SonarrModal/index.tsx
+++ b/src/components/Settings/SonarrModal/index.tsx
@@ -50,6 +50,8 @@ const messages = defineMessages({
   externalUrl: 'External URL',
   externalUrlPlaceholder: 'External URL pointing to your Sonarr server',
   preventSearch: 'Disable Auto-Search',
+  validationApplicationUrl: 'You must provide a valid URL',
+  validationApplicationUrlTrailingSlash: 'URL must not end in a trailing slash',
 });
 
 interface TestResponse {
@@ -102,6 +104,18 @@ const SonarrModal: React.FC<SonarrModalProps> = ({
     activeProfileId: Yup.string().required(
       intl.formatMessage(messages.validationProfileRequired)
     ),
+    externalUrl: Yup.string()
+      .url(intl.formatMessage(messages.validationApplicationUrl))
+      .test(
+        'no-trailing-slash',
+        intl.formatMessage(messages.validationApplicationUrlTrailingSlash),
+        (value) => {
+          if (value?.substr(value.length - 1) === '/') {
+            return false;
+          }
+          return true;
+        }
+      ),
   });
 
   const testConnection = useCallback(
diff --git a/src/i18n/locale/en.json b/src/i18n/locale/en.json
index 47554464..997061d9 100644
--- a/src/i18n/locale/en.json
+++ b/src/i18n/locale/en.json
@@ -325,6 +325,8 @@
   "components.Settings.RadarrModal.toastRadarrTestFailure": "Failed to connect to Radarr.",
   "components.Settings.RadarrModal.toastRadarrTestSuccess": "Radarr connection established!",
   "components.Settings.RadarrModal.validationApiKeyRequired": "You must provide an API key",
+  "components.Settings.RadarrModal.validationApplicationUrl": "You must provide a valid URL",
+  "components.Settings.RadarrModal.validationApplicationUrlTrailingSlash": "URL must not end in a trailing slash",
   "components.Settings.RadarrModal.validationHostnameRequired": "You must provide a hostname/IP",
   "components.Settings.RadarrModal.validationMinimumAvailabilityRequired": "You must select a minimum availability",
   "components.Settings.RadarrModal.validationNameRequired": "You must provide a server name",
@@ -409,6 +411,8 @@
   "components.Settings.SonarrModal.toastSonarrTestFailure": "Failed to connect to Sonarr.",
   "components.Settings.SonarrModal.toastSonarrTestSuccess": "Sonarr connection established!",
   "components.Settings.SonarrModal.validationApiKeyRequired": "You must provide an API key",
+  "components.Settings.SonarrModal.validationApplicationUrl": "You must provide a valid URL",
+  "components.Settings.SonarrModal.validationApplicationUrlTrailingSlash": "URL must not end in a trailing slash",
   "components.Settings.SonarrModal.validationHostnameRequired": "You must provide a hostname/IP",
   "components.Settings.SonarrModal.validationNameRequired": "You must provide a server name",
   "components.Settings.SonarrModal.validationPortRequired": "You must provide a port",
@@ -502,6 +506,8 @@
   "components.Settings.trustProxy": "Enable Proxy Support",
   "components.Settings.trustProxyTip": "Allows Overseerr to correctly register client IP addresses behind a proxy (Overseerr must be reloaded for changes to take effect)",
   "components.Settings.validationApplicationTitle": "You must provide an application title",
+  "components.Settings.validationApplicationUrl": "You must provide a valid URL",
+  "components.Settings.validationApplicationUrlTrailingSlash": "URL must not end in a trailing slash",
   "components.Settings.validationHostnameRequired": "You must provide a hostname/IP",
   "components.Settings.validationPortRequired": "You must provide a port",
   "components.Setup.configureplex": "Configure Plex",