1 files changed, 4 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/session/ConnectionManager.java b/src/main/java/org/traccar/session/ConnectionManager.java
index abc13988d..ad02c591b 100644
--- a/src/main/java/org/traccar/session/ConnectionManager.java
+++ b/src/main/java/org/traccar/session/ConnectionManager.java
@@ -47,11 +47,13 @@ import javax.inject.Inject;
 import javax.inject.Singleton;
 import java.net.InetSocketAddress;
 import java.net.SocketAddress;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
@@ -114,6 +116,8 @@ public class ConnectionManager implements BroadcastInterface {
         Endpoint endpoint = new Endpoint(channel, remoteAddress);
         Map<String, DeviceSession> endpointSessions = sessionsByEndpoint.getOrDefault(
                 endpoint, new ConcurrentHashMap<>());
+
+        uniqueIds = Arrays.stream(uniqueIds).filter(Objects::nonNull).toArray(String[]::new);
         if (uniqueIds.length > 0) {
             for (String uniqueId : uniqueIds) {
                 DeviceSession deviceSession = endpointSessions.get(uniqueId);