diff --git a/cypress/integration/vault.spec.js b/cypress/integration/vault.spec.js
--- a/cypress/integration/vault.spec.js
+++ b/cypress/integration/vault.spec.js
@@ -36,11 +36,11 @@
 // objectType : {'directory', 'revision'}
 function genVaultCookingResponse(objectType, objectId, status, message, fetchUrl) {
   return {
-    'obj_type': objectType,
+    'type': objectType,
     'id': 1,
-    'progress_message': message,
-    'status': status,
-    'obj_id': objectId,
+    'progress_msg': message,
+    'task_status': status,
+    'object_id': objectId,
     'fetch_url': fetchUrl
   };
 };
@@ -80,12 +80,12 @@
     this.vaultFetchRevisionUrl = this.Urls.api_1_vault_fetch_revision_gitfast(this.revision);
 
     vaultItems[0] = {
-      'object_type': 'revision',
+      'type': 'revision',
       'object_id': this.revision,
       'email': '',
-      'status': 'done',
+      'task_status': 'done',
       'fetch_url': `/api/1/vault/revision/${this.revision}/gitfast/raw/`,
-      'progress_message': null
+      'progress_msg': null
     };
   });
 
diff --git a/swh/web/assets/src/bundles/vault/vault-ui.js b/swh/web/assets/src/bundles/vault/vault-ui.js
--- a/swh/web/assets/src/bundles/vault/vault-ui.js
+++ b/swh/web/assets/src/bundles/vault/vault-ui.js
@@ -146,10 +146,10 @@
     .then(cookingTasks => {
       let table = $('#vault-cooking-tasks tbody');
       for (let i = 0; i < cookingTasks.length; ++i) {
-        let cookingTask = tasks[cookingTasks[i].obj_id];
-        cookingTask.status = cookingTasks[i].status;
+        let cookingTask = tasks[cookingTasks[i].object_id];
+        cookingTask.status = cookingTasks[i].task_status;
         cookingTask.fetch_url = cookingTasks[i].fetch_url;
-        cookingTask.progress_message = cookingTasks[i].progress_message;
+        cookingTask.progress_message = cookingTasks[i].progress_msg;
       }
       for (let i = 0; i < vaultCookingTasks.length; ++i) {
         let cookingTask = vaultCookingTasks[i];
@@ -193,7 +193,9 @@
       localStorage.setItem('swh-vault-cooking-tasks', JSON.stringify(vaultCookingTasks));
       checkVaultId = setTimeout(checkVaultCookingTasks, pollingInterval);
     })
-    .catch(() => {});
+    .catch(error => {
+      console.log('Error when fetching vault cooking tasks:', error);
+    });
 }
 
 export function removeCookingTaskInfo(tasksToRemove) {
diff --git a/swh/web/tests/api/views/test_vault.py b/swh/web/tests/api/views/test_vault.py
--- a/swh/web/tests/api/views/test_vault.py
+++ b/swh/web/tests/api/views/test_vault.py
@@ -36,10 +36,10 @@
         )
         stub_cook = {
             "fetch_url": fetch_url,
-            "obj_id": obj_id,
-            "obj_type": obj_type,
+            "object_id": obj_id,
+            "type": obj_type,
             "progress_message": None,
-            "status": "done",
+            "task_status": "done",
             "task_uuid": "de75c902-5ee5-4739-996e-448376a93eff",
         }
         stub_fetch = b"content"