Update app.py

app.py

@@ -142,7 +142,7 @@ def main(message: str, history: list, model: str, temperature: float, max_new_to
         if not INIT_SIGN:
             yield "Please initialize Ollama"
         else:
-            if process:
+            if not process:
                 launch()
             stream_chat(
                 message,