From 769bb7806f441c25ed2000ca0bce0be911e97605 Mon Sep 17 00:00:00 2001
From: Edda Solem <ESOLE@ac-cjxf9td7p3.client.statoil.net>
Date: Wed, 12 Jun 2024 15:44:45 +0200
Subject: [PATCH] Prevent frontend from crashing on empty signalR msg

---
 frontend/src/components/Contexts/SignalRContext.tsx | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/frontend/src/components/Contexts/SignalRContext.tsx b/frontend/src/components/Contexts/SignalRContext.tsx
index 83bbd2f7c..dd11aca6c 100644
--- a/frontend/src/components/Contexts/SignalRContext.tsx
+++ b/frontend/src/components/Contexts/SignalRContext.tsx
@@ -81,7 +81,14 @@ export const SignalRProvider: FC<Props> = ({ children }) => {
     }, [accessToken])
 
     const registerEvent = (eventName: string, onMessageReceived: (username: string, message: string) => void) => {
-        if (connection) connection.on(eventName, (username, message) => onMessageReceived(username, message))
+        if (connection)
+            connection.on(eventName, (username, message) => {
+                if (message === 'null') {
+                    console.warn(`Received signalR message for event ${eventName} is 'null'`)
+                    return
+                }
+                onMessageReceived(username, message)
+            })
     }
 
     return (