Update routes/llm.py

routes/llm.py

@@ -136,7 +136,7 @@ async def sse_generator(request: ChatRequest, llm_api: DeepInfraApi, system_prom
             role=msg.role,
             content=msg.content,
             reasoning=msg.reasoning,
-            searchResults=msg.searchResults[:500] + "..." if msg.searchResults else None,
+            searchResults=msg.searchResults[:500] + "..." if msg.searchResults else '',
             searchEntities=[],
         ) for msg in old_history]
         request.history = new_history