Spring Boot Maven Project Obfuscation with Proguard - spring-boot

Question

I am using Java 11, Spring Boot 2.2.4 and Proguard 6.2.2.
My pom.xml for proguard as follows
<build>
<finalName>${artifactId}</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>com.github.wvengen</groupId>
<artifactId>proguard-maven-plugin</artifactId>
<version>2.2.0</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>proguard</goal>
</goals>
</execution>
</executions>
<configuration>
<proguardVersion>6.2.2</proguardVersion>
<injar>${project.build.finalName}.jar</injar>
<outjar>${project.build.finalName}.jar</outjar>
<includeDependency>true</includeDependency>
<obfuscate>true</obfuscate>
<proguardInclude>${basedir}/proguard.conf</proguardInclude>
<injarNotExistsSkip>true</injarNotExistsSkip>
<libs>
<lib>${java.home}/jmods</lib>
<lib>${java.home}/lib</lib>
</libs>
<archive>
<manifest>
<mainClass>Application</mainClass>
<packageName>com.abc</packageName>
</manifest>
</archive>
</configuration>
<dependencies>
<dependency>
<groupId>net.sf.proguard</groupId>
<artifactId>proguard-base</artifactId>
<version>6.2.2</version>
<scope>runtime</scope>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<mainClass>com.abc.Application</mainClass>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
My Proguard configuration (proguard.conf) as follows
-ignorewarnings
-dontshrink
-dontoptimize
-keepdirectories
-adaptclassstrings
-useuniqueclassmembernames
-dontusemixedcaseclassnames
-flattenpackagehierarchy 'com.abc'
-keepattributes Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,LocalVariable*Table,*Annotation*,Synthetic,EnclosingMethod
-keep class com.abc.Application
-keep class * extends org.springframework.boot.ApplicationRunner
-keepclasseswithmembers public class * {
public static void main(java.lang.String[]);
}
-keepclassmembers enum * {
public static **[] values();
public static ** valueOf(java.lang.String);
}
-keepclasseswithmembers,includedescriptorclasses,allowshrinking class * {
native <methods>;
}
When I run the obfucated jar, I am getting below error
Exception in thread "main" java.lang.IllegalStateException: Failed to get nested archive for entry BOOT-INF/lib/spring-boot-starter-data-jpa-2.2.4.RELEASE.jar
Caused by: java.lang.IllegalStateException: Unable to open nested entry 'BOOT-INF/lib/spring-boot-starter-data-jpa-2.2.4.RELEASE.jar'. It has been compressed and nested jar files must be stored without compression. Please check the mechanism used to create your executable jar file