src/admin.js

@@ -191,6 +191,7 @@ document.addEventListener('DOMContentLoaded', () => {
         placeholderClass: 'side-menu-setting-list-drop'
     })
 
+    try {
         sortable('#categories-list .side-menu-setting-list')[0].addEventListener('sortstop', (e) => {
             let value = []
 
@@ -200,4 +201,6 @@ document.addEventListener('DOMContentLoaded', () => {
 
             document.querySelector('input[name="categories-order"]').value = JSON.stringify(value)
         })
+    } catch (e) {
+    }
 })