diff --git a/.dist/infiniteScroller.js b/.dist/infiniteScroller.js
index 32e12f6..c289bd2 100644
--- a/.dist/infiniteScroller.js
+++ b/.dist/infiniteScroller.js
@@ -60,7 +60,7 @@ class InfiniteScroller {
     snapBottom() {
         const scrollBottom = this.scrollBottom;
         return () => {
-            if (scrollBottom < 30) {
+            if (this.scroll && scrollBottom < 30) {
                 this.scroll.scrollTop = this.scroll.scrollHeight;
             }
         };
diff --git a/webpage/infiniteScroller.ts b/webpage/infiniteScroller.ts
index 89368be..1c72cab 100644
--- a/webpage/infiniteScroller.ts
+++ b/webpage/infiniteScroller.ts
@@ -62,7 +62,7 @@ class InfiniteScroller{
     snapBottom(){
         const scrollBottom=this.scrollBottom;
         return ()=>{
-            if(scrollBottom<30){
+            if(this.scroll&&scrollBottom<30){
                 this.scroll.scrollTop=this.scroll.scrollHeight;
             }
         }