diff --git a/event/axios.js b/event/axios.js
index 07ca014..402d9a8 100644
--- a/event/axios.js
+++ b/event/axios.js
@@ -1,7 +1,13 @@
 import axios from "axios";
 
+const siteURL = window.location.origin + (
+  document.head.innerHTML.match(/;gon.relative_url_root="(\/\w+?)";/)?.[1]
+  ?? ''
+);
+// console.log('---spantree:', siteURL);
+
 const options = {
-  baseURL: `${window.location.origin}/api/v4/projects/`,
+  baseURL: `${siteURL}/api/v4/projects/`,
 };
 
 const inst = axios.create(options);