1 files changed, 7 insertions, 1 deletions
diff --git a/src/org/traccar/protocol/Gl200ProtocolDecoder.java b/src/org/traccar/protocol/Gl200ProtocolDecoder.java
index c109ea4c7..019c839cd 100644
--- a/src/org/traccar/protocol/Gl200ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Gl200ProtocolDecoder.java
@@ -22,6 +22,7 @@ import java.util.regex.Pattern;
 import org.jboss.netty.channel.Channel;
 import org.jboss.netty.channel.ChannelHandlerContext;
 import org.traccar.GenericProtocolDecoder;
+import org.traccar.helper.Log;
 import org.traccar.model.DataManager;
 import org.traccar.model.Position;
 
@@ -81,7 +82,12 @@ public class Gl200ProtocolDecoder extends GenericProtocolDecoder {
 
         // Get device by IMEI
         String imei = parser.group(index++);
-        position.setDeviceId(getDataManager().getDeviceByImei(imei).getId());
+        try {
+            position.setDeviceId(getDataManager().getDeviceByImei(imei).getId());
+        } catch(Exception error) {
+            Log.warning("Unknown device - " + imei);
+            return null;
+        }
 
         // Validity
         position.setValid(Integer.valueOf(parser.group(index++)) == 0 ? false : true);