Tried modifying download href again.

index.html

@@ -199,7 +199,8 @@
     <h1>Downloads</h1>
     <ul>
       <li>
-        <a download="linux-build.zip" href="/spaces/cm107/excav_demo/resolve/main/linux-build.zip">
+        <a download="linux-build.zip"
+          href="https://huggingface.co/spaces/cm107/excav_demo/resolve/main/linux-build.zip">
           Linux Build
         </a>
       </li>