add changelog

Author: michalsn

user_guide_src/source/changelogs/v4.6.4.rst

@@ -45,6 +45,7 @@ Bugs Fixed
 - **Model:** Fixed a bug in ``Model::replace()`` where ``created_at`` field (when available) wasn't set correctly.
 - **Model:** Fixed a bug in ``Model::insertBatch()`` and ``Model::updateBatch()`` where casts were not applied to inserted or updated values.
 - **Toolbar:** Fixed bugs in ``Collectors\Logs`` that were preventing the "Logs" tab from appearing on the Debug Toolbar.
+- **Toolbar:** Fixed a bug in the ``toolbar.js`` file, which caused "Uncaught TypeError" for some scenarios.
 - **Validation:** Fixed a bug in the ``FormatRules::valid_base64()`` validation rule that caused a TypeError when checking invalid base64 strings.
 
 See the repo's