From efe0664962df035d5453446d6fe1ee9bb1e878bc Mon Sep 17 00:00:00 2001
From: Matthew Runyon <matthewrunyon@deephaven.io>
Date: Fri, 27 Oct 2023 10:10:53 -0500
Subject: [PATCH] Fix NullPointerException if connection is closed after server
 goes away (#4727)

---
 .../java/io/deephaven/web/client/api/WorkerConnection.java   | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/web/client-api/src/main/java/io/deephaven/web/client/api/WorkerConnection.java b/web/client-api/src/main/java/io/deephaven/web/client/api/WorkerConnection.java
index b7eff98e4b4..7237e5b5a66 100644
--- a/web/client-api/src/main/java/io/deephaven/web/client/api/WorkerConnection.java
+++ b/web/client-api/src/main/java/io/deephaven/web/client/api/WorkerConnection.java
@@ -673,7 +673,10 @@ public void forceClose() {
         }
 
         newSessionReconnect.disconnected();
-        DomGlobal.clearTimeout(scheduledAuthUpdate);
+        if (scheduledAuthUpdate != null) {
+            DomGlobal.clearTimeout(scheduledAuthUpdate);
+            scheduledAuthUpdate = null;
+        }
     }
 
     public void setSessionTimeoutMs(double sessionTimeoutMs) {