keep-alive uses the following

<transition name="slide-fade">
    <keep-alive include="search">
        <router-view ></router-view>
    </keep-alive>
</transition>

browser press back to return to search (the first entry and refresh will not report an error) report the following error Error in updated hook: "TypeError: Cannot read property "update" of null , remove keep-alive , there is no update keyword in the code global search, do not understand what is the reason, solve the puzzle!