From fc1c60f7354c0ac752f568e42aeef6f340b7bb70 Mon Sep 17 00:00:00 2001
From: Boris Sekachev <boris.sekachev@yandex.ru>
Date: Wed, 2 Dec 2020 11:24:29 +0300
Subject: [PATCH 1/2] Fixed issue 2516

---
 cvat-ui/src/actions/annotation-actions.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cvat-ui/src/actions/annotation-actions.ts b/cvat-ui/src/actions/annotation-actions.ts
index fdf86a7f2d07..634aeaf34eda 100644
--- a/cvat-ui/src/actions/annotation-actions.ts
+++ b/cvat-ui/src/actions/annotation-actions.ts
@@ -510,13 +510,13 @@ export function removeObjectAsync(sessionInstance: any, objectState: any, force:
                     },
                 });
             } else {
-                throw new Error('Could not remove the object. Is it locked?');
+                throw new Error('Could not remove the locked object');
             }
         } catch (error) {
             dispatch({
                 type: AnnotationActionTypes.REMOVE_OBJECT_FAILED,
                 payload: {
-                    objectState,
+                    error,
                 },
             });
         }

From 2cdc7aeef0e73bcc89110e923f583cbc6da92616 Mon Sep 17 00:00:00 2001
From: Boris Sekachev <boris.sekachev@yandex.ru>
Date: Wed, 2 Dec 2020 11:26:37 +0300
Subject: [PATCH 2/2] Updated changelog & version

---
 CHANGELOG.md              | 1 +
 cvat-ui/package-lock.json | 2 +-
 cvat-ui/package.json      | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 602b284de8e5..4785f3d0d236 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -37,6 +37,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Projects view layout fix (<https://github.com/openvinotoolkit/cvat/pull/2503>)
 - Fixed the tasks view (infinite loading) when it is impossible to get a preview of the task (<https://github.com/openvinotoolkit/cvat/pull/2504>)
 - Empty frames navigation (<https://github.com/openvinotoolkit/cvat/pull/2505>)
+- TypeError: Cannot read property 'toString' of undefined (<https://github.com/openvinotoolkit/cvat/pull/2517>)
 
 ### Security
 
diff --git a/cvat-ui/package-lock.json b/cvat-ui/package-lock.json
index 08cea1144979..59a75dbd6440 100644
--- a/cvat-ui/package-lock.json
+++ b/cvat-ui/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "cvat-ui",
-  "version": "1.11.0",
+  "version": "1.11.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/cvat-ui/package.json b/cvat-ui/package.json
index 4dea1406d1a6..35884c245bef 100644
--- a/cvat-ui/package.json
+++ b/cvat-ui/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cvat-ui",
-  "version": "1.11.0",
+  "version": "1.11.1",
   "description": "CVAT single-page application",
   "main": "src/index.tsx",
   "scripts": {