diff --git a/ui/litellm-dashboard/src/components/lens/traces/detail/conversation/useConversationDetails.ts b/ui/litellm-dashboard/src/components/lens/traces/detail/conversation/useConversationDetails.ts
index 6d6643a22bf..843169218e5 100644
--- a/ui/litellm-dashboard/src/components/lens/traces/detail/conversation/useConversationDetails.ts
+++ b/ui/litellm-dashboard/src/components/lens/traces/detail/conversation/useConversationDetails.ts
@@ -5,7 +5,7 @@ import { useTracesApi, type TracesApi } from "../../api";
 import type { Span, SpanDetail, Trace } from "../../types";
 import { CONVERSATION_PAGE_SIZE, conversationSteps } from "./conversation";
 
-async function readBatch(traces: TracesApi, traceId: string, ids: string[], traceRef: string): Promise<SpanDetail[]> {
+async function readBatch(traces: TracesApi, traceId: string, ids: string[], traceRef?: string): Promise<SpanDetail[]> {
   try {
     return await traces.spans(traceId, ids, traceRef);
   } catch (error) {