Update app.py

app.py

@@ -120,7 +120,9 @@ async def stream_chat(message: str, history: list, model: str, temperature: floa
             if not process:
                 launch()
                 print("Giving ollama serve a moment")
-                time.sleep(10)                 
+                time.sleep(10)    
+
+            buffer = ""
             async for part in await client.chat(
                 model=model,
                 stream=True,
@@ -135,8 +137,6 @@ async def stream_chat(message: str, history: list, model: str, temperature: floa
                     'low_vram': True,
                     },
                 ):
-
-                buffer = ""
                 buffer += part['message']['content']
                 yield buffer