no more column in datatable slots

pages/refseq.vue

@@ -168,8 +168,8 @@ const computedDistriTaxoOptions = computed(() => {
       density="compact" :search="search" :custom-filter="filterOnlyCapsText" height="800" show-select class="elevation-1">
 
       <template #[`item.type`]="{ item }">
-        <v-chip variant="text" link :to="`/defense-systems/${item.columns.type.toLowerCase()}`">{{
-          item.columns.type
+        <v-chip variant="text" link :to="`/defense-systems/${item.type.toLowerCase()}`">{{
+          item.type
         }}</v-chip>
       </template>
     </v-data-table-virtual>