diff --git a/packages/console/src/hooks/use-api.ts b/packages/console/src/hooks/use-api.ts
index 5be24f6f1..d86ea96bc 100644
--- a/packages/console/src/hooks/use-api.ts
+++ b/packages/console/src/hooks/use-api.ts
@@ -13,13 +13,8 @@ import { TenantsContext } from '@/contexts/TenantsProvider';
 import { useConfirmModal } from './use-confirm-modal';
 
 export class RequestError extends Error {
-  status: number;
-  body?: RequestErrorBody;
-
-  constructor(status: number, body: RequestErrorBody) {
+  constructor(public readonly status: number, public readonly body?: RequestErrorBody) {
     super('Request error occurred.');
-    this.status = status;
-    this.body = body;
   }
 }
 
diff --git a/packages/console/src/hooks/use-swr-fetcher.ts b/packages/console/src/hooks/use-swr-fetcher.ts
index 1851849ab..1db2c9fe2 100644
--- a/packages/console/src/hooks/use-swr-fetcher.ts
+++ b/packages/console/src/hooks/use-swr-fetcher.ts
@@ -1,4 +1,3 @@
-import type { RequestErrorBody } from '@logto/schemas';
 import { HTTPError } from 'ky';
 import type { KyInstance } from 'ky/distribution/types/ky';
 import { useCallback } from 'react';
@@ -41,8 +40,9 @@ const useSwrFetcher: useSwrFetcherHook = <T>(api: KyInstance) => {
       } catch (error: unknown) {
         if (error instanceof HTTPError) {
           const { response } = error;
-          const metadata = await response.json<RequestErrorBody>();
-          throw new RequestError(response.status, metadata);
+          // See https://stackoverflow.com/questions/53511974/javascript-fetch-failed-to-execute-json-on-response-body-stream-is-locked
+          // for why `.clone()` is needed
+          throw new RequestError(response.status, await response.clone().json());
         }
         throw error;
       }
diff --git a/packages/console/src/pages/SignInExperience/tabs/Others/components/ManageLanguage/LanguageEditor/LanguageDetails.tsx b/packages/console/src/pages/SignInExperience/tabs/Others/components/ManageLanguage/LanguageEditor/LanguageDetails.tsx
index df1ccf1f6..3680a37fc 100644
--- a/packages/console/src/pages/SignInExperience/tabs/Others/components/ManageLanguage/LanguageEditor/LanguageDetails.tsx
+++ b/packages/console/src/pages/SignInExperience/tabs/Others/components/ManageLanguage/LanguageEditor/LanguageDetails.tsx
@@ -20,6 +20,7 @@ import Table from '@/components/Table';
 import Textarea from '@/components/Textarea';
 import { Tooltip } from '@/components/Tip';
 import useApi, { RequestError } from '@/hooks/use-api';
+import useSwrFetcher from '@/hooks/use-swr-fetcher';
 import useUiLanguages from '@/hooks/use-ui-languages';
 import {
   createEmptyUiTranslation,
@@ -34,18 +35,14 @@ const emptyUiTranslation = createEmptyUiTranslation();
 
 const LanguageDetails = () => {
   const { t } = useTranslation(undefined, { keyPrefix: 'admin_console' });
-
   const { data: signInExperience } = useSWR<SignInExperience, RequestError>('api/sign-in-exp');
-
   const { languages } = useUiLanguages();
-
   const { selectedLanguage, setIsDirty, setSelectedLanguage } = useContext(LanguageEditorContext);
-
   const [isDeletionAlertOpen, setIsDeletionAlertOpen] = useState(false);
-
   const isBuiltIn = isBuiltInLanguageTag(selectedLanguage);
-
   const isDefaultLanguage = signInExperience?.languageInfo.fallbackLanguage === selectedLanguage;
+  const fetchApi = useApi({ hideErrorToast: true });
+  const fetcher = useSwrFetcher<CustomPhraseResponse>(fetchApi);
 
   const translationEntries = useMemo(
     () => Object.entries((isBuiltIn ? resource[selectedLanguage] : en).translation),
@@ -55,6 +52,7 @@ const LanguageDetails = () => {
   const { data: customPhrase, mutate } = useSWR<CustomPhraseResponse, RequestError>(
     `api/custom-phrases/${selectedLanguage}`,
     {
+      fetcher,
       shouldRetryOnError: (error: unknown) => {
         if (error instanceof RequestError) {
           return error.status !== 404;
@@ -98,7 +96,6 @@ const LanguageDetails = () => {
   ]);
 
   const { mutate: globalMutate } = useSWRConfig();
-
   const api = useApi();
 
   const upsertCustomPhrase = useCallback(