<v-treeview :items="items" :lines="false"></v-treeview>

Invalid prop: type check failed for prop "lines". Expected String, got Boolean with value false.
 at <VListItemref=Ref<[object Object]>active=undefinedactiveClass=undefined ...>
 at <VTreeviewItemtitle="Conference introduction : avi"value=undefined>
 at <VTreeviewChildrenloadChildren=undefinedloadingIcon="$loading"items=[object Object],[object Object],[object Object] ...>
 at <BaseTransitionappear=falsepersisted=falsemode=undefined ...>
 at <Transitionname="expand-transition"css=trueonBeforeEnter=fn<onBeforeEnter> ...>
 at <ExpandTransitiondisabled=false>
 at <MaybeTransitiontransition=[object Object]disabled=false>
 at <VListGroupactiveColor=undefinedbaseColor=undefinedcolor=undefined ...>
 at <VTreeviewGroupvalue=undefinedtitle="Videos :">
 at <VTreeviewChildrenloadChildren=undefinedloadingIcon="$loading"items=[object Object],[object Object],[object Object],[object Object] ...>
 at <VListChildrenitems=[object Object],[object Object],[object Object],[object Object]returnObject=false>
 at <VListref=Ref<[object Object]>baseColor=undefinedactiveColor=undefined ...>
 at <VTreeviewitems=[object Object],[object Object],[object Object],[object Object]lines=false>
 at <App>