fixed return value

app.py

@@ -10,7 +10,7 @@ def slow_echo(message, history):
     translated = translator(message)[0]['translation_text']
     for i in range(len(translated)):
         time.sleep(0.05)
-        yield message[: i+1]
+        yield translated[: i+1]
 
 demo = gr.ChatInterface(slow_echo).queue()