Update CHANGELOG.md

Author: claudiodekker

CHANGELOG.md

@@ -5,7 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased](https://github.com/inertiajs/inertia-laravel/compare/v0.5.0...HEAD)
+## [Unreleased](https://github.com/inertiajs/inertia-laravel/compare/v0.5.1...HEAD)
+
+## [v0.5.1](https://github.com/inertiajs/inertia-laravel/compare/v0.5.0...v0.5.1) - 2022-01-07
+
+### Fixed
+
+- When the SSR Server crashes, a `null` response will be returned, which wasn't being handled properly ([7d7d89](https://github.com/inertiajs/inertia-laravel/commit/7d7d891d72792f6cab6b616d5bbbb48f0526d65f))
 
 ## [v0.5.0](https://github.com/inertiajs/inertia-laravel/compare/v0.4.5...v0.5.0) - 2022-01-07