我最近升级了我的flutter到3.7，我得到了这个错误遍布我的项目

Noop primitive operations



ListView.builder(
                  key: Key('builder ${selected.toString()}'), //attention
                  padding: const EdgeInsets.only(top: 22),
                  itemCount: widget.faq.length,
                  itemBuilder: (final BuildContext context, final int index) => listItems(widget.faq[index], index),
                )

toString方法出错。