diff --git a/spring-5-reactive-2/src/test/resources/logback-test.xml b/spring-5-reactive-2/src/test/resources/logback-test.xml
index 514029e402..6f1d947e93 100644
--- a/spring-5-reactive-2/src/test/resources/logback-test.xml
+++ b/spring-5-reactive-2/src/test/resources/logback-test.xml
@@ -1,16 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<configuration>
-	<include
-		resource="org/springframework/boot/logging/logback/base.xml" />
-	<appender name="LISTAPPENDER"
-		class="com.baeldung.debugging.consumer.utils.ListAppender">
+<configuration scan="true" scanPeriod="15 seconds" debug="false">
+	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+		<encoder>
+			<pattern>[%d{ISO8601}]-[%thread] %-5level %logger - %msg%n</pattern>
+		</encoder>
 	</appender>
-	<logger
-		name="com.baeldung.debugging.consumer.service.FooService">
-		<appender-ref ref="LISTAPPENDER" />
-	</logger>
-	<root level="info">
-		<appender-ref ref="CONSOLE" />
-		<appender-ref ref="LISTAPPENDER" />
+
+	<root level="INFO">
+		<appender-ref ref="STDOUT" />
 	</root>
-</configuration>  
\ No newline at end of file
+</configuration>
\ No newline at end of file
diff --git a/spring-reactive/src/main/java/com/baeldung/reactive/debugging/server/ServerDebuggingApplication.java b/spring-reactive/src/main/java/com/baeldung/reactive/debugging/server/ServerDebuggingApplication.java
index c9838705b5..ddf97ee5a8 100644
--- a/spring-reactive/src/main/java/com/baeldung/reactive/debugging/server/ServerDebuggingApplication.java
+++ b/spring-reactive/src/main/java/com/baeldung/reactive/debugging/server/ServerDebuggingApplication.java
@@ -2,6 +2,7 @@ package com.baeldung.reactive.debugging.server;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.mongo.MongoReactiveAutoConfiguration;
 import org.springframework.context.annotation.Bean;
 import org.springframework.security.config.web.server.ServerHttpSecurity;
 import org.springframework.security.web.server.SecurityWebFilterChain;
@@ -10,7 +11,7 @@ import org.springframework.web.reactive.config.EnableWebFlux;
 import java.util.Collections;
 
 @EnableWebFlux
-@SpringBootApplication
+@SpringBootApplication(exclude = MongoReactiveAutoConfiguration.class)
 public class ServerDebuggingApplication {
     
     public static void main(String[] args) {
diff --git a/spring-reactive/src/main/java/com/baeldung/reactive/errorhandling/ErrorHandlingApplication.java b/spring-reactive/src/main/java/com/baeldung/reactive/errorhandling/ErrorHandlingApplication.java
index a22f04a8d2..c40db74003 100644
--- a/spring-reactive/src/main/java/com/baeldung/reactive/errorhandling/ErrorHandlingApplication.java
+++ b/spring-reactive/src/main/java/com/baeldung/reactive/errorhandling/ErrorHandlingApplication.java
@@ -2,11 +2,12 @@ package com.baeldung.reactive.errorhandling;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.mongo.MongoReactiveAutoConfiguration;
 import org.springframework.context.annotation.Bean;
 import org.springframework.security.config.web.server.ServerHttpSecurity;
 import org.springframework.security.web.server.SecurityWebFilterChain;
 
-@SpringBootApplication
+@SpringBootApplication(exclude = MongoReactiveAutoConfiguration.class)
 public class ErrorHandlingApplication {
 
     public static void main(String[] args) {
diff --git a/spring-reactive/src/main/java/com/baeldung/reactive/webclient/WebClientApplication.java b/spring-reactive/src/main/java/com/baeldung/reactive/webclient/WebClientApplication.java
index d2a5b6a024..fd1cb8aff1 100644
--- a/spring-reactive/src/main/java/com/baeldung/reactive/webclient/WebClientApplication.java
+++ b/spring-reactive/src/main/java/com/baeldung/reactive/webclient/WebClientApplication.java
@@ -2,13 +2,24 @@ package com.baeldung.reactive.webclient;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.boot.autoconfigure.security.reactive.ReactiveSecurityAutoConfiguration;
+import org.springframework.boot.autoconfigure.mongo.MongoReactiveAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.security.config.web.server.ServerHttpSecurity;
+import org.springframework.security.web.server.SecurityWebFilterChain;
 
-@SpringBootApplication(exclude = { ReactiveSecurityAutoConfiguration.class })
+@SpringBootApplication(exclude = MongoReactiveAutoConfiguration.class)
 public class WebClientApplication {
 
     public static void main(String[] args) {
         SpringApplication.run(WebClientApplication.class, args);
     }
 
+    @Bean
+    public SecurityWebFilterChain functionalValidationsSpringSecurityFilterChain(ServerHttpSecurity http) {
+        http.authorizeExchange()
+                .anyExchange()
+                .permitAll();
+        http.csrf().disable();
+        return http.build();
+    }
 }
diff --git a/spring-reactive/src/main/java/com/baeldung/reactive/webclientrequests/SpringWebClientRequestsApp.java b/spring-reactive/src/main/java/com/baeldung/reactive/webclientrequests/SpringWebClientRequestsApp.java
index d43fe43a77..e16c3fe551 100644
--- a/spring-reactive/src/main/java/com/baeldung/reactive/webclientrequests/SpringWebClientRequestsApp.java
+++ b/spring-reactive/src/main/java/com/baeldung/reactive/webclientrequests/SpringWebClientRequestsApp.java
@@ -2,8 +2,9 @@ package com.baeldung.reactive.webclientrequests;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.mongo.MongoReactiveAutoConfiguration;
 
-@SpringBootApplication
+@SpringBootApplication(exclude = MongoReactiveAutoConfiguration.class)
 public class SpringWebClientRequestsApp {
 
     public static void main(String[] args) {
diff --git a/spring-reactive/src/main/java/com/baeldung/reactive/webflux/EmployeeRepository.java b/spring-reactive/src/main/java/com/baeldung/reactive/webflux/EmployeeRepository.java
index 8a57f5c510..9aebc577b0 100644
--- a/spring-reactive/src/main/java/com/baeldung/reactive/webflux/EmployeeRepository.java
+++ b/spring-reactive/src/main/java/com/baeldung/reactive/webflux/EmployeeRepository.java
@@ -1,6 +1,5 @@
 package com.baeldung.reactive.webflux;
 
-import com.baeldung.reactive.webflux.Employee;
 import org.springframework.stereotype.Repository;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
diff --git a/spring-reactive/src/main/java/com/baeldung/reactive/webflux/annotation/EmployeeSpringApplication.java b/spring-reactive/src/main/java/com/baeldung/reactive/webflux/annotation/EmployeeSpringApplication.java
index 1a2ada96e9..f1d21bdc77 100644
--- a/spring-reactive/src/main/java/com/baeldung/reactive/webflux/annotation/EmployeeSpringApplication.java
+++ b/spring-reactive/src/main/java/com/baeldung/reactive/webflux/annotation/EmployeeSpringApplication.java
@@ -2,8 +2,9 @@ package com.baeldung.reactive.webflux.annotation;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.mongo.MongoReactiveAutoConfiguration;
 
-@SpringBootApplication
+@SpringBootApplication(exclude = MongoReactiveAutoConfiguration.class)
 public class EmployeeSpringApplication {
 
     public static void main(String[] args) {
diff --git a/spring-reactive/src/main/java/com/baeldung/reactive/webflux/functional/EmployeeSpringFunctionalApplication.java b/spring-reactive/src/main/java/com/baeldung/reactive/webflux/functional/EmployeeSpringFunctionalApplication.java
index f710cf44eb..e90f5c0e96 100644
--- a/spring-reactive/src/main/java/com/baeldung/reactive/webflux/functional/EmployeeSpringFunctionalApplication.java
+++ b/spring-reactive/src/main/java/com/baeldung/reactive/webflux/functional/EmployeeSpringFunctionalApplication.java
@@ -2,8 +2,9 @@ package com.baeldung.reactive.webflux.functional;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.mongo.MongoReactiveAutoConfiguration;
 
-@SpringBootApplication
+@SpringBootApplication(exclude = MongoReactiveAutoConfiguration.class)
 public class EmployeeSpringFunctionalApplication {
 
     public static void main(String[] args) {
diff --git a/spring-reactive/src/test/java/com/baeldung/reactive/webclient/WebControllerIntegrationTest.java b/spring-reactive/src/test/java/com/baeldung/reactive/webclient/WebControllerIntegrationTest.java
index 3c0683a419..3ab687bb41 100644
--- a/spring-reactive/src/test/java/com/baeldung/reactive/webclient/WebControllerIntegrationTest.java
+++ b/spring-reactive/src/test/java/com/baeldung/reactive/webclient/WebControllerIntegrationTest.java
@@ -6,9 +6,11 @@ import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.context.junit4.SpringRunner;
 import org.springframework.test.web.reactive.server.WebTestClient;
 
+@DirtiesContext(classMode = DirtiesContext.ClassMode.BEFORE_CLASS)
 @RunWith(SpringRunner.class)
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT, classes = WebClientApplication.class)
 public class WebControllerIntegrationTest {