diff --git a/CHANGELOG.md b/CHANGELOG.md
index a919868..e819c11 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 
 ## Changelog
 
+### v4.0.7 - 2022-09-07
+
+- Fixed: Fix conflict class names.
+- Fixed: Remove PHP warning notices.
+
 ### v4.0.6 - 2022-08-25
 
 - Fixed: Fix issue return wrong SVG path.
diff --git a/acf-icomoon.php b/acf-icomoon.php
index 3898af0..0952598 100644
--- a/acf-icomoon.php
+++ b/acf-icomoon.php
@@ -3,7 +3,7 @@
  * Plugin Name:       Support For Icomoon with Advanced Custom Fields
  * Plugin URI:        https://wordpress.org/plugins/acf-icomoon/
  * Description:       🔩 Add a field to select icons from a selection.json file generated by IcoMoon
- * Version:           4.0.6
+ * Version:           4.0.7
  * Requires at least: 5.2
  * Requires PHP:      7.2
  * Author:            ViiVue
diff --git a/changelog.txt b/changelog.txt
index d6c445e..d922c30 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,5 +1,11 @@
 == Changelog ==
 
+= 4.0.7 =
+*Release Date - 07 September 2022*
+
+- Fixed: Fix conflict class names.
+- Fixed: Remove PHP warning notices.
+
 = 4.0.6 =
 *Release Date - 25 August 2022*
 
diff --git a/includes/fields/acf-field-icomoon.php b/includes/fields/acf-field-icomoon.php
index 08ef1aa..02449ca 100644
--- a/includes/fields/acf-field-icomoon.php
+++ b/includes/fields/acf-field-icomoon.php
@@ -146,7 +146,8 @@ function viivue_get_icomoon_json($json_path = ''): array{
 							if($icon_paths){
 								foreach($icon_paths as $index => $path){
 									// svg
-									$fill           = viivue_array_key_exists('fill', $icon_attrs[$index]);
+									$icon_attr      = viivue_array_key_exists($index, $icon_attrs, array());
+									$fill           = viivue_array_key_exists('fill', $icon_attr);
 									$icon_svg_inner .= '<path fill="' . $fill . '" d="' . $path . '"></path>';
 									
 									// html
diff --git a/readme.txt b/readme.txt
index 7d8657d..64e85db 100644
--- a/readme.txt
+++ b/readme.txt
@@ -2,9 +2,9 @@
 Contributors: viivue, daomapsieucap, phucbm
 Tags: Advanced Custom Fields, ACF, Icomoon
 Requires at least: 4.7
-Tested up to: 6.0.1
-Requires PHP: 7.0
-Stable tag: 4.0.6
+Tested up to: 6.0.2
+Requires PHP: 7.2
+Stable tag: 4.0.7
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
 
@@ -30,7 +30,8 @@ This ACF field type is compatible with:
 
 == Changelog ==
 
-= 4.0.6 =
-*Release Date - 25 August 2022*
+= 4.0.7 =
+*Release Date - 07 September 2022*
 
-- Fixed: Fix issue return wrong SVG path.
\ No newline at end of file
+- Fixed: Fix conflict class names.
+- Fixed: Remove PHP warning notices.
\ No newline at end of file