Weblogic fails deploying SpringBoot + Security Extensions (BEA-160228: AppMerge failed to merge your application) - spring-boot

Question

I'm having trouble adding some dependencies to my Spring Boot application:
I have a Spring Boot (2.0.4.RELEASE) application. Weblogic deploy the application perfectly.
I have added some dependencies in order to develop a SAML2 Client (based on this example)
With this dependencies, I get the following error. In the server's log: <BEA-160228> <AppMerge failed to merge your application. If you are running AppMerge on the command-line, merge again with the -verbose option for more details. See the error message(s) below.>
Of all the dependencies, I have isolated the one that generates the problem, it is:
<groupId>org.springframework.security.extensions</groupId>
<artifactId>spring-security-saml2-core</artifactId>
<version>1.0.10.RELEASE</version>
I try to configure my weblogic.xml:
<?xml version="1.0" encoding="UTF-8"?>
<wls:weblogic-web-app xmlns:wls="http://xmlns.oracle.com/weblogic/weblogic-web-app"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.oracle.com/weblogic/weblogic-web-app http://xmlns.oracle.com/weblogic/weblogic-web-app/1.9/weblogic-web-app.xsd">
<wls:context-root>SAML-CLIENT</wls:context-root>
<wls:container-descriptor>
<wls:prefer-web-inf-classes>false</wls:prefer-web-inf-classes>
<wls:prefer-application-packages>
<wls:package-name>org.springframework.*</wls:package-name>
<wls:package-name>org.hibernate.*</wls:package-name>
<wls:package-name>javax.validation.*</wls:package-name>
<wls:package-name>javax.validation.spi.*</wls:package-name>
<wls:package-name>javax.xml.bind.*</wls:package-name>
<wls:package-name>org.slf4j.*</wls:package-name>
<wls:package-name>org.slf4j.helpers.*</wls:package-name>
<wls:package-name>org.slf4j.impl.*</wls:package-name>
<wls:package-name>org.slf4j.spi.*</wls:package-name>
<wls:package-name>com.fasterxml.jackson.*</wls:package-name>
<wls:package-name>javax.el.*</wls:package-name>
<wls:package-name>com.narupley.*</wls:package-name>
<wls:package-name>org.bouncycastle.*</wls:package-name>
<wls:package-name>org.apache.*</wls:package-name>
<wls:package-name>org.owasp.*</wls:package-name>
<wls:package-name>org.opensaml.*</wls:package-name>
</wls:prefer-application-packages>
</wls:container-descriptor>
</wls:weblogic-web-app>
My pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.byj</groupId>
<artifactId>saml-client</artifactId>
<version>0.0.20-SNAPSHOT</version>
<name>saml-client</name>
<description>SAML-CLIENT</description>
<packaging>war</packaging>
<properties>
<java.version>1.8</java.version>
<log4j2.version>2.8.2</log4j2.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<!-- Deploying Weblogic. TODO: Maven profiles -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-legacy</artifactId>
<version>2.1.0.RELEASE</version>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>javax.el</groupId>
<artifactId>javax.el-api</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.4.1.Final</version>
</dependency>
<!-- SAML & security specific dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- TODO: weblogic.utils.compiler.ToolFailureException -->
<dependency>
<groupId>org.springframework.security.extensions</groupId>
<artifactId>spring-security-saml2-core</artifactId>
<version>1.0.10.RELEASE</version>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
<exclusion>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
</exclusion>
<exclusion>
<groupId>org.opensaml</groupId>
<artifactId>opensaml</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.opensaml</groupId>
<artifactId>opensaml</artifactId>
<version>2.6.4</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>
But I can't get it to work. Any Ideas? Does anyone know how I can get a more detailed trace of the error (like this)?