Widget _buildErrorMessage(BuildContext context) {
    return TDButton(
        isBlock: true,
        text: '错误通知',
        size: TDButtonSize.large,
        type: TDButtonType.outline,
        width: 450,
        theme: TDButtonTheme.primary,
        onTap: () {
          TDMessage.showMessage(
            context: context,
            visible: true,
            icon: true,
            content: _commonContent,
            theme: MessageTheme.error,
            duration: 3000,
          );
        });
  }