计算此统计测试时无法理解问题

Question

ljung_box_results = sm.stats.acorr_ljungbox(arima_fit1.resid)
fig, ax = plt.subplots(1, figsize=(10, 6))
sns.scatterplot(x=range(len(ljung_box_results)), y=ljung_box_results.iloc [:, 1], ax=ax)
ax.axhline(0.05, ls='--', color='red')
ax.set(title=f"Ljung-Box test results (after modeling {ticker8} stock prices)", xlabel='Lags', ylabel='p-value')

我遇到的错误是：

AttributeError                            Traceback (most recent call last)
/var/folders/1l/x64tmr_d4yg4qr9l0kcplqdm0000gn/T/ipykernel_17122/3984955723.py in <module>
      3 ljung_box_results = sm.stats.acorr_ljungbox(arima_fit1.resid)
      4 fig, ax = plt.subplots(1, figsize=(10, 6))
----> 5 sns.scatterplot(x=range(len(ljung_box_results)), y=ljung_box_results.iloc [:, 1], ax=ax)
      6 ax.axhline(0.05, ls='--', color='red')
      7 ax.set(title=f"Ljung-Box test results (after modeling {ticker8} stock prices)", xlabel='Lags', ylabel='p-value')

AttributeError: 'tuple' object has no attribute 'iloc'