From 2872c04934aeec166a598073b9c34cdf6226f94a Mon Sep 17 00:00:00 2001
From: Sebastian Serth <Sebastian.Serth@hpi.de>
Date: Sun, 5 Nov 2023 23:57:24 +0100
Subject: [PATCH] Fix exception for WebSocket connection without cookie

Fixes CODEOCEAN-YW
---
 app/channels/application_cable/connection.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/channels/application_cable/connection.rb b/app/channels/application_cable/connection.rb
index c769d366..a0098bdc 100644
--- a/app/channels/application_cable/connection.rb
+++ b/app/channels/application_cable/connection.rb
@@ -20,7 +20,7 @@ module ApplicationCable
 
     def session
       # `session` is not available here, so that we need to use `cookies.encrypted` instead
-      cookies.encrypted[Rails.application.config.session_options[:key]].symbolize_keys
+      cookies.encrypted[Rails.application.config.session_options[:key]]&.symbolize_keys || {}
     end
 
     def find_verified_user