diff --git a/src/pages/home/toolbar/PackageDownload.tsx b/src/pages/home/toolbar/PackageDownload.tsx
index 1a9fb5d95..d2ba4fbef 100644
--- a/src/pages/home/toolbar/PackageDownload.tsx
+++ b/src/pages/home/toolbar/PackageDownload.tsx
@@ -1,7 +1,7 @@
 import "~/utils/zip-stream.js"
 import streamSaver from "streamsaver"
 import { getLinkByDirAndObj, useRouter, useT } from "~/hooks"
-import { fsList, pathBase, pathJoin } from "~/utils"
+import { fsList, joinBase, pathBase, pathJoin } from "~/utils"
 import { password, selectedObjs as _selectedObjs } from "~/store"
 import { createSignal, For, Show } from "solid-js"
 import {
@@ -14,7 +14,7 @@ import {
 } from "@hope-ui/solid"
 import { Obj } from "~/types"
 
-streamSaver.mitm = "/streamer/mitm.html"
+streamSaver.mitm = joinBase("streamer", "mitm.html")
 const trimSlash = (str: string) => {
   return str.replace(/^\/+|\/+$/g, "")
 }
@@ -115,6 +115,11 @@ const PackageDownload = (props: { onClose: () => void }) => {
           const url = it.value.url
           // console.log(name, url);
           return fetch(url).then((res) => {
+            if (!res.ok) {
+              throw new Error(
+                `Failed to fetch ${name}: ${res.status} ${res.statusText}`,
+              )
+            }
             setFetchings((prev) => [...prev, name])
             ctrl.enqueue({
               name,