diff --git a/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/connectivity/MqttGatewayClientTest.java b/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/connectivity/MqttGatewayClientTest.java
index d39a09f050..788de04cb1 100644
--- a/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/connectivity/MqttGatewayClientTest.java
+++ b/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/connectivity/MqttGatewayClientTest.java
@@ -16,12 +16,10 @@
 package org.thingsboard.server.msa.connectivity;
 
 import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.common.collect.Sets;
 import com.google.common.util.concurrent.ListenableFuture;
 import com.google.common.util.concurrent.ListeningExecutorService;
 import com.google.common.util.concurrent.MoreExecutors;
-import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 import io.netty.buffer.ByteBuf;
@@ -30,13 +28,10 @@ import io.netty.handler.codec.mqtt.MqttQoS;
 import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.RandomStringUtils;
-import org.checkerframework.checker.units.qual.A;
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
-import org.springframework.core.ParameterizedTypeReference;
-import org.springframework.http.HttpMethod;
 import org.springframework.http.ResponseEntity;
 import org.thingsboard.mqtt.MqttClient;
 import org.thingsboard.mqtt.MqttClientConfig;
@@ -44,25 +39,24 @@ import org.thingsboard.mqtt.MqttHandler;
 import org.thingsboard.server.common.data.Device;
 import org.thingsboard.server.common.data.id.DeviceId;
 import org.thingsboard.server.common.data.id.EntityId;
-import org.thingsboard.server.common.data.id.RuleChainId;
-import org.thingsboard.server.common.data.page.TextPageData;
 import org.thingsboard.server.common.data.relation.EntityRelation;
-import org.thingsboard.server.common.data.relation.EntityRelationInfo;
 import org.thingsboard.server.common.data.relation.RelationTypeGroup;
-import org.thingsboard.server.common.data.rule.NodeConnectionInfo;
-import org.thingsboard.server.common.data.rule.RuleChain;
-import org.thingsboard.server.common.data.rule.RuleChainMetaData;
-import org.thingsboard.server.common.data.rule.RuleNode;
 import org.thingsboard.server.common.data.security.DeviceCredentials;
 import org.thingsboard.server.msa.AbstractContainerTest;
 import org.thingsboard.server.msa.WsClient;
-import org.thingsboard.server.msa.mapper.AttributesResponse;
 import org.thingsboard.server.msa.mapper.WsTelemetryResponse;
 
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
-import java.util.*;
-import java.util.concurrent.*;
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Random;
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 
 @Slf4j
 public class MqttGatewayClientTest extends AbstractContainerTest {