diff --git a/radicale/web/internal_data/js/utils/collections_cache.js b/radicale/web/internal_data/js/utils/collections_cache.js
index 7110df0f..cc5669c6 100644
--- a/radicale/web/internal_data/js/utils/collections_cache.js
+++ b/radicale/web/internal_data/js/utils/collections_cache.js
@@ -26,7 +26,7 @@ import { is_current_scene, pop_scene, push_scene } from "../scenes/scene_manager
 
 class CollectionsCache {
     constructor() {
-        this.child_collections = null;
+        /** @type {?Array<import("../models/collection.js").Collection>} */ this.child_collections = null;
         /** @type {?Array<import("../api/sharing.js").Share>} */ this.incoming_shares = null;
         this.server_features = null;
         /** @type {?XMLHttpRequest} */ this.collections_req = null;
@@ -73,6 +73,8 @@ class CollectionsCache {
             }
             if (error) {
                 onerror(error);
+                this.child_collections = [];
+                this.incoming_shares = [];
                 pop_scene();
             } else if (collections !== null && shares !== null) {
                 this.child_collections = collections;