Update app.py

app.py

@@ -45,8 +45,9 @@ def replay(model_id, filename, environment, evaluate):
 	
 	mean_reward, std_reward = evaluate_policy(model, env, n_eval_episodes=10)
 	print(f"mean_reward={mean_reward:.2f} +/- {std_reward}")
-	
-	return f"mean_reward={mean_reward:.2f} +/- {std_reward}"
+	results = f"mean_reward={mean_reward:.2f} +/- {std_reward}" 
+	print(type(results))
+	return results
 
 
 iface = gr.Interface(fn=replay, inputs=[