diff --git a/client/src/api/fetch.ts b/client/src/api/fetch.ts
index 42a70c36d..837b06568 100644
--- a/client/src/api/fetch.ts
+++ b/client/src/api/fetch.ts
@@ -75,7 +75,7 @@ export const streamFetch = ({ data, onMessage, abortSignal }: StreamFetchProps)
             })();
 
             if (item.event === sseResponseEventEnum.answer && data !== '[DONE]') {
-              const answer: string = data?.choices[0].delta.content || '';
+              const answer: string = data?.choices?.[0].delta.content || '';
               onMessage(answer);
               responseText += answer;
             } else if (item.event === sseResponseEventEnum.chatResponse) {
diff --git a/client/src/service/utils/chat/openai.ts b/client/src/service/utils/chat/openai.ts
index ecfe8105e..70148d450 100644
--- a/client/src/service/utils/chat/openai.ts
+++ b/client/src/service/utils/chat/openai.ts
@@ -57,7 +57,7 @@ export const chatResponse = async ({
     }
   );
 
-  const responseText = stream ? '' : response.data.choices[0].message?.content || '';
+  const responseText = stream ? '' : response.data.choices?.[0].message?.content || '';
   const totalTokens = stream ? 0 : response.data.usage?.total_tokens || 0;
 
   return {