From a854c5a9669622415b94566f7c6c18ab814986fb Mon Sep 17 00:00:00 2001
From: mpetrov <mpetrov@thingsboard.io>
Date: Mon, 16 Sep 2024 18:59:14 +0300
Subject: [PATCH] [4413] added mqtt mapping minor fix

---
 .../lib/gateway/abstract/mqtt-version-processor.abstract.ts   | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/mqtt-version-processor.abstract.ts b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/mqtt-version-processor.abstract.ts
index 351ad76494..00fff92493 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/mqtt-version-processor.abstract.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/mqtt-version-processor.abstract.ts
@@ -74,8 +74,8 @@ export class MqttVersionProcessor extends GatewayConnectorVersionProcessor<MQTTB
   getDowngradedVersion(): GatewayConnector<MQTTLegacyBasicConfig> {
     const { requestsMapping, mapping, ...restConfig } = this.connector.configurationJson as MQTTBasicConfig_v3_5_2;
 
-    const updatedRequestsMapping =
-      MqttVersionMappingUtil.mapRequestsToDowngradedVersion(requestsMapping as Record<RequestType, RequestMappingData[]>);
+    const updatedRequestsMapping = requestsMapping
+      ? MqttVersionMappingUtil.mapRequestsToDowngradedVersion(requestsMapping as Record<RequestType, RequestMappingData[]>) : {};
     const updatedMapping = MqttVersionMappingUtil.mapMappingToDowngradedVersion(mapping);
 
     return {