diff --git a/.nvmdrc b/.nvmdrc
new file mode 100644
index 0000000..5e99ced
--- /dev/null
+++ b/.nvmdrc
@@ -0,0 +1 @@
+18.20.8
\ No newline at end of file
diff --git a/src/pages-sub/home/wishesList/components/DataTable.vue b/src/pages-sub/home/wishesList/components/DataTable.vue
index dd9cb6c..12f877b 100644
--- a/src/pages-sub/home/wishesList/components/DataTable.vue
+++ b/src/pages-sub/home/wishesList/components/DataTable.vue
@@ -136,7 +136,7 @@ const columns = ref([
 const rankDiff = (index: number, item) => {
   return index === props.data.length - 1
     ? item['rankLine']
-    : item['rankLine'] !== '--'
+    : item['rankLine'] != '--' && props.data[index + 1]['rankLine'] != '--'
       ? item['rankLine'] - props.data[index + 1]['rankLine']
       : '--'
 }
@@ -148,9 +148,11 @@ const recompileData = computed(() => {
       props.lowscoreRank !== -1
         ? props.lowscoreRank === 0
           ? '--'
-          : item['rankLine'] - props.lowscoreRank
+          : item['rankLine'] != '--'
+            ? item['rankLine'] - props.lowscoreRank
+            : '--'
         : rankDiff(index, item)
-    item['lineDiff'] = item['score'] !== '--' ? item['score'] - props.score : 0
+    item['lineDiff'] = item['score'] != '--' ? item['score'] - props.score : 0
     return item
   })
   return _data