title: Groovy Dependency Issue with Maven and Spring Boot
body: <p>I have a Spring Boot application which includes a number of other libraries. It compiles fine (<code>mvn clean package</code>), but when I try to run the built server I get the following error:</p>
  
  <pre><code>java.lang.ExceptionInInitializerError: null
      at org.springframework.beans.factory.groovy.GroovyBeanDefinitionReader.&lt;init&gt;(GroovyBeanDefinitionReader.java:150) ~[spring-beans-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
      at org.springframework.boot.BeanDefinitionLoader.&lt;init&gt;(BeanDefinitionLoader.java:84) ~[spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
      at org.springframework.boot.SpringApplication.createBeanDefinitionLoader(SpringApplication.java:684) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
      at org.springframework.boot.SpringApplication.load(SpringApplication.java:624) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
      at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:355) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:301) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
      at myproject.graphutils.server.GraphUtilsServer.main(GraphUtilsServer.java:9) [classes!/:1.0-SNAPSHOT]
      at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
      at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
      at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
      at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
      at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [graph-utils-server-1.0-SNAPSHOT.jar:1.0-SNAPSHOT]
      at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [graph-utils-server-1.0-SNAPSHOT.jar:1.0-SNAPSHOT]
      at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) [graph-utils-server-1.0-SNAPSHOT.jar:1.0-SNAPSHOT]
      at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) [graph-utils-server-1.0-SNAPSHOT.jar:1.0-SNAPSHOT]
  Caused by: groovy.lang.GroovyRuntimeException: Conflicting module versions. Module [groovy-xml is loaded in version 2.4.11 and you are trying to load version 2.4.13
      at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl$DefaultModuleListener.onModule(MetaClassRegistryImpl.java:513) ~[data-to-graph-mapper-1.0-SNAPSHOT.jar!/:na]
      at org.codehaus.groovy.runtime.m12n.ExtensionModuleScanner.scanExtensionModuleFromProperties(ExtensionModuleScanner.java:80) ~[data-to-graph-mapper-1.0-SNAPSHOT.jar!/:na]
      at org.codehaus.groovy.runtime.m12n.ExtensionModuleScanner.scanExtensionModuleFromMetaInf(ExtensionModuleScanner.java:74) ~[data-to-graph-mapper-1.0-SNAPSHOT.jar!/:na]
      at org.codehaus.groovy.runtime.m12n.ExtensionModuleScanner.scanClasspathModules(ExtensionModuleScanner.java:56) ~[data-to-graph-mapper-1.0-SNAPSHOT.jar!/:na]
      at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.&lt;init&gt;(MetaClassRegistryImpl.java:113) ~[data-to-graph-mapper-1.0-SNAPSHOT.jar!/:na]
      at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.&lt;init&gt;(MetaClassRegistryImpl.java:74) ~[data-to-graph-mapper-1.0-SNAPSHOT.jar!/:na]
      at groovy.lang.GroovySystem.&lt;clinit&gt;(GroovySystem.java:36) ~[data-to-graph-mapper-1.0-SNAPSHOT.jar!/:na]
      ... 17 common frames omitted
  </code></pre>
  
  <p>I've tried forcing the correct dependency version of all the Groovy related modules, but that hasn't helped. Here's my POM file (with the forced versions):</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;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 http://maven.apache.org/xsd/maven-4.0.0.xsd"&gt;
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
  
      &lt;parent&gt;
          &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
          &lt;artifactId&gt;spring-boot-starter-parent&lt;/artifactId&gt;
          &lt;version&gt;1.5.10.RELEASE&lt;/version&gt;
      &lt;/parent&gt;
  
      &lt;groupId&gt;myproject&lt;/groupId&gt;
      &lt;artifactId&gt;graph-utils-server&lt;/artifactId&gt;
      &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;
  
      &lt;properties&gt;
          &lt;maven.compiler.source&gt;1.8&lt;/maven.compiler.source&gt;
          &lt;maven.compiler.target&gt;1.8&lt;/maven.compiler.target&gt;
      &lt;/properties&gt;
  
      &lt;dependencies&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;myproject&lt;/groupId&gt;
              &lt;artifactId&gt;graph-utils&lt;/artifactId&gt;
              &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;
          &lt;/dependency&gt;
  
          &lt;dependency&gt;
              &lt;groupId&gt;myproject&lt;/groupId&gt;
              &lt;artifactId&gt;data-to-graph-mapper&lt;/artifactId&gt;
              &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;
          &lt;/dependency&gt;
  
          &lt;!-- Spring Boot --&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
              &lt;artifactId&gt;spring-boot-starter-web&lt;/artifactId&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
              &lt;artifactId&gt;spring-boot-devtools&lt;/artifactId&gt;
              &lt;optional&gt;true&lt;/optional&gt;
          &lt;/dependency&gt;
  
          &lt;dependency&gt;
              &lt;groupId&gt;commons-io&lt;/groupId&gt;
              &lt;artifactId&gt;commons-io&lt;/artifactId&gt;
              &lt;version&gt;2.6&lt;/version&gt;
          &lt;/dependency&gt;
  
          &lt;!-- AWS --&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;com.amazonaws&lt;/groupId&gt;
              &lt;artifactId&gt;aws-java-sdk-s3&lt;/artifactId&gt;
              &lt;version&gt;1.11.276&lt;/version&gt;
          &lt;/dependency&gt;
  
          &lt;!-- Force versions --&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.apache.tinkerpop&lt;/groupId&gt;
              &lt;artifactId&gt;tinkergraph-gremlin&lt;/artifactId&gt;
              &lt;version&gt;3.3.1&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.apache.tinkerpop&lt;/groupId&gt;
              &lt;artifactId&gt;gremlin-groovy&lt;/artifactId&gt;
              &lt;version&gt;3.3.1&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.codehaus.groovy&lt;/groupId&gt;
              &lt;artifactId&gt;groovy&lt;/artifactId&gt;
              &lt;version&gt;2.4.13&lt;/version&gt;
              &lt;classifier&gt;indy&lt;/classifier&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.codehaus.groovy&lt;/groupId&gt;
              &lt;artifactId&gt;groovy-groovysh&lt;/artifactId&gt;
              &lt;version&gt;2.4.13&lt;/version&gt;
              &lt;classifier&gt;indy&lt;/classifier&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.codehaus.groovy&lt;/groupId&gt;
              &lt;artifactId&gt;groovy-json&lt;/artifactId&gt;
              &lt;version&gt;2.4.13&lt;/version&gt;
              &lt;classifier&gt;indy&lt;/classifier&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.codehaus.groovy&lt;/groupId&gt;
              &lt;artifactId&gt;groovy-jsr223&lt;/artifactId&gt;
              &lt;version&gt;2.4.13&lt;/version&gt;
              &lt;classifier&gt;indy&lt;/classifier&gt;
          &lt;/dependency&gt;
  
      &lt;!-- JanusGraph --&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.janusgraph&lt;/groupId&gt;
              &lt;artifactId&gt;janusgraph-core&lt;/artifactId&gt;
              &lt;version&gt;0.2.0&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.janusgraph&lt;/groupId&gt;
              &lt;artifactId&gt;janusgraph-hbase&lt;/artifactId&gt;
              &lt;version&gt;0.2.0&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.janusgraph&lt;/groupId&gt;
              &lt;artifactId&gt;janusgraph-lucene&lt;/artifactId&gt;
              &lt;version&gt;0.2.0&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.apache.hbase&lt;/groupId&gt;
              &lt;artifactId&gt;hbase-client&lt;/artifactId&gt;
              &lt;version&gt;1.4.1&lt;/version&gt;
          &lt;/dependency&gt;
      &lt;/dependencies&gt;
  
      &lt;build&gt;
          &lt;plugins&gt;
              &lt;plugin&gt;
                  &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
                  &lt;artifactId&gt;spring-boot-maven-plugin&lt;/artifactId&gt;
              &lt;/plugin&gt;
          &lt;/plugins&gt;
      &lt;/build&gt;
  &lt;/project&gt;
  </code></pre>
  
  <p>And here's the Maven dependency tree:</p>
  
  <pre><code>--- maven-dependency-plugin:2.10:tree (default-cli) @ graph-utils-server ---
  
  myproject:graph-utils-server:jar:1.0-SNAPSHOT
  +- myproject:graph-utils:jar:1.0-SNAPSHOT:compile
  +- myproject:data-to-graph-mapper:jar:1.0-SNAPSHOT:compile
  +- org.springframework.boot:spring-boot-starter-web:jar:1.5.10.RELEASE:compile
  |  +- org.springframework.boot:spring-boot-starter:jar:1.5.10.RELEASE:compile
  |  |  +- org.springframework.boot:spring-boot-starter-logging:jar:1.5.10.RELEASE:compile
  |  |  |  +- org.slf4j:jul-to-slf4j:jar:1.7.25:compile
  |  |  |  \- org.slf4j:log4j-over-slf4j:jar:1.7.25:compile
  |  |  +- org.springframework:spring-core:jar:4.3.14.RELEASE:compile
  |  |  \- org.yaml:snakeyaml:jar:1.17:compile
  |  +- org.springframework.boot:spring-boot-starter-tomcat:jar:1.5.10.RELEASE:compile
  |  |  +- org.apache.tomcat.embed:tomcat-embed-core:jar:8.5.27:compile
  |  |  |  \- org.apache.tomcat:tomcat-annotations-api:jar:8.5.27:compile
  |  |  +- org.apache.tomcat.embed:tomcat-embed-el:jar:8.5.27:compile
  |  |  \- org.apache.tomcat.embed:tomcat-embed-websocket:jar:8.5.27:compile
  |  +- org.hibernate:hibernate-validator:jar:5.3.6.Final:compile
  |  |  +- javax.validation:validation-api:jar:1.1.0.Final:compile
  |  |  +- org.jboss.logging:jboss-logging:jar:3.3.1.Final:compile
  |  |  \- com.fasterxml:classmate:jar:1.3.4:compile
  |  +- com.fasterxml.jackson.core:jackson-databind:jar:2.8.10:compile
  |  |  +- com.fasterxml.jackson.core:jackson-annotations:jar:2.8.0:compile
  |  |  \- com.fasterxml.jackson.core:jackson-core:jar:2.8.10:compile
  |  +- org.springframework:spring-web:jar:4.3.14.RELEASE:compile
  |  |  +- org.springframework:spring-aop:jar:4.3.14.RELEASE:compile
  |  |  +- org.springframework:spring-beans:jar:4.3.14.RELEASE:compile
  |  |  \- org.springframework:spring-context:jar:4.3.14.RELEASE:compile
  |  \- org.springframework:spring-webmvc:jar:4.3.14.RELEASE:compile
  |     \- org.springframework:spring-expression:jar:4.3.14.RELEASE:compile
  +- org.springframework.boot:spring-boot-devtools:jar:1.5.10.RELEASE:compile
  |  +- org.springframework.boot:spring-boot:jar:1.5.10.RELEASE:compile
  |  \- org.springframework.boot:spring-boot-autoconfigure:jar:1.5.10.RELEASE:compile
  +- commons-io:commons-io:jar:2.6:compile
  +- com.amazonaws:aws-java-sdk-s3:jar:1.11.276:compile
  |  +- com.amazonaws:aws-java-sdk-kms:jar:1.11.276:compile
  |  +- com.amazonaws:aws-java-sdk-core:jar:1.11.276:compile
  |  |  +- org.apache.httpcomponents:httpclient:jar:4.5.5:compile
  |  |  |  \- org.apache.httpcomponents:httpcore:jar:4.4.9:compile
  |  |  +- software.amazon.ion:ion-java:jar:1.0.2:compile
  |  |  +- com.fasterxml.jackson.dataformat:jackson-dataformat-cbor:jar:2.8.10:compile
  |  |  \- joda-time:joda-time:jar:2.9.9:compile
  |  \- com.amazonaws:jmespath-java:jar:1.11.276:compile
  +- org.apache.tinkerpop:tinkergraph-gremlin:jar:3.3.1:compile
  |  +- org.apache.tinkerpop:gremlin-core:jar:3.3.1:compile
  |  |  +- org.apache.tinkerpop:gremlin-shaded:jar:3.3.1:compile
  |  |  +- org.javatuples:javatuples:jar:1.2:compile
  |  |  +- com.jcabi:jcabi-manifests:jar:1.1:compile
  |  |  |  \- com.jcabi:jcabi-log:jar:0.14:compile
  |  |  +- com.squareup:javapoet:jar:1.8.0:compile
  |  |  +- net.objecthunter:exp4j:jar:0.4.8:compile
  |  |  \- org.slf4j:jcl-over-slf4j:jar:1.7.25:compile
  |  \- org.apache.commons:commons-lang3:jar:3.3.1:compile
  +- org.apache.tinkerpop:gremlin-groovy:jar:3.3.1:compile
  |  +- org.apache.ivy:ivy:jar:2.3.0:compile
  |  +- org.mindrot:jbcrypt:jar:0.4:compile
  |  \- com.github.ben-manes.caffeine:caffeine:jar:2.3.5:compile
  +- org.codehaus.groovy:groovy:jar:indy:2.4.13:compile
  +- org.codehaus.groovy:groovy-groovysh:jar:indy:2.4.13:compile
  |  +- org.codehaus.groovy:groovy:jar:2.4.13:compile
  |  +- org.codehaus.groovy:groovy-console:jar:2.4.13:compile
  |  |  +- org.codehaus.groovy:groovy-swing:jar:2.4.13:compile
  |  |  \- org.codehaus.groovy:groovy-templates:jar:2.4.13:compile
  |  |     \- org.codehaus.groovy:groovy-xml:jar:2.4.13:compile
  |  \- jline:jline:jar:2.12:compile
  +- org.codehaus.groovy:groovy-json:jar:indy:2.4.13:compile
  +- org.codehaus.groovy:groovy-jsr223:jar:indy:2.4.13:compile
  +- org.janusgraph:janusgraph-core:jar:0.2.0:compile
  |  +- org.glassfish:javax.json:jar:1.0:compile
  |  +- com.codahale.metrics:metrics-core:jar:3.0.1:compile
  |  +- com.codahale.metrics:metrics-ganglia:jar:3.0.1:compile
  |  |  \- info.ganglia.gmetric4j:gmetric4j:jar:1.0.3:compile
  |  +- com.codahale.metrics:metrics-graphite:jar:3.0.1:compile
  |  +- org.reflections:reflections:jar:0.9.9-RC1:compile
  |  |  +- org.javassist:javassist:jar:3.21.0-GA:compile
  |  |  \- dom4j:dom4j:jar:1.6.1:compile
  |  |     \- xml-apis:xml-apis:jar:1.4.01:compile
  |  +- org.locationtech.spatial4j:spatial4j:jar:0.6:compile
  |  +- commons-collections:commons-collections:jar:3.2.2:compile
  |  +- commons-configuration:commons-configuration:jar:1.10:compile
  |  +- commons-codec:commons-codec:jar:1.10:compile
  |  +- com.google.guava:guava:jar:18.0:compile
  |  +- com.carrotsearch:hppc:jar:0.7.1:compile
  |  +- com.github.stephenc.high-scale-lib:high-scale-lib:jar:1.1.4:compile
  |  +- com.google.code.findbugs:jsr305:jar:3.0.0:compile
  |  +- org.noggit:noggit:jar:0.6:compile
  |  +- org.apache.commons:commons-text:jar:1.0:compile
  |  \- org.slf4j:slf4j-api:jar:1.7.25:compile
  +- org.janusgraph:janusgraph-hbase:jar:0.2.0:compile
  |  \- ch.qos.logback:logback-classic:jar:1.1.11:compile
  |     \- ch.qos.logback:logback-core:jar:1.1.11:compile
  +- org.janusgraph:janusgraph-lucene:jar:0.2.0:compile
  |  +- org.apache.lucene:lucene-core:jar:7.0.0:compile
  |  +- org.apache.lucene:lucene-analyzers-common:jar:7.0.0:compile
  |  +- org.apache.lucene:lucene-queryparser:jar:7.0.0:compile
  |  |  +- org.apache.lucene:lucene-queries:jar:7.0.0:compile
  |  |  \- org.apache.lucene:lucene-sandbox:jar:7.0.0:compile
  |  +- org.apache.lucene:lucene-spatial:jar:7.0.0:compile
  |  \- org.apache.lucene:lucene-spatial-extras:jar:7.0.0:compile
  |     \- org.apache.lucene:lucene-spatial3d:jar:7.0.0:compile
  \- org.apache.hbase:hbase-client:jar:1.4.1:compile
     +- org.apache.hbase:hbase-annotations:jar:1.4.1:compile
     |  +- com.github.stephenc.findbugs:findbugs-annotations:jar:1.3.9-1:compile
     |  +- log4j:log4j:jar:1.2.17:compile
     |  \- junit:junit:jar:4.12:compile
     |     \- org.hamcrest:hamcrest-core:jar:1.3:compile
     +- org.apache.hbase:hbase-common:jar:1.4.1:compile
     |  +- org.mortbay.jetty:jetty-util:jar:6.1.26:compile
     |  \- org.apache.avro:avro:jar:1.7.7:compile
     |     +- com.thoughtworks.paranamer:paranamer:jar:2.3:compile
     |     \- org.xerial.snappy:snappy-java:jar:1.0.5:compile
     +- org.apache.hbase:hbase-hadoop-compat:jar:1.4.1:compile
     |  +- org.apache.commons:commons-math:jar:2.2:compile
     |  \- org.apache.hbase:hbase-metrics-api:jar:1.4.1:compile
     +- org.apache.hbase:hbase-hadoop2-compat:jar:1.4.1:compile
     |  \- org.apache.hbase:hbase-metrics:jar:1.4.1:compile
     |     \- io.dropwizard.metrics:metrics-core:jar:3.1.5:compile
     +- org.apache.hbase:hbase-protocol:jar:1.4.1:compile
     +- commons-lang:commons-lang:jar:2.6:compile
     +- commons-logging:commons-logging:jar:1.2:compile
     +- com.google.protobuf:protobuf-java:jar:2.5.0:compile
     +- io.netty:netty-all:jar:4.1.8.Final:compile
     +- org.apache.zookeeper:zookeeper:jar:3.4.10:compile
     |  \- org.slf4j:slf4j-log4j12:jar:1.7.25:compile
     +- org.apache.htrace:htrace-core:jar:3.1.0-incubating:compile
     +- org.codehaus.jackson:jackson-mapper-asl:jar:1.9.13:compile
     |  \- org.codehaus.jackson:jackson-core-asl:jar:1.9.13:compile
     +- org.jruby.jcodings:jcodings:jar:1.0.8:compile
     +- org.jruby.joni:joni:jar:2.1.2:compile
     +- com.yammer.metrics:metrics-core:jar:2.2.0:compile
     +- org.apache.hadoop:hadoop-auth:jar:2.7.4:compile
     |  +- org.apache.directory.server:apacheds-kerberos-codec:jar:2.0.0-M15:compile
     |  |  +- org.apache.directory.server:apacheds-i18n:jar:2.0.0-M15:compile
     |  |  +- org.apache.directory.api:api-asn1-api:jar:1.0.0-M20:compile
     |  |  \- org.apache.directory.api:api-util:jar:1.0.0-M20:compile
     |  \- org.apache.curator:curator-framework:jar:2.7.1:compile
     +- org.apache.hadoop:hadoop-common:jar:2.7.4:compile
     |  +- org.apache.hadoop:hadoop-annotations:jar:2.7.4:compile
     |  |  \- jdk.tools:jdk.tools:jar:1.8:system
     |  +- commons-cli:commons-cli:jar:1.2:compile
     |  +- org.apache.commons:commons-math3:jar:3.1.1:compile
     |  +- xmlenc:xmlenc:jar:0.52:compile
     |  +- commons-httpclient:commons-httpclient:jar:3.1:compile
     |  +- commons-net:commons-net:jar:3.1:compile
     |  +- org.mortbay.jetty:jetty-sslengine:jar:6.1.26:compile
     |  +- com.google.code.gson:gson:jar:2.8.2:compile
     |  +- com.jcraft:jsch:jar:0.1.54:compile
     |  +- org.apache.curator:curator-client:jar:2.7.1:compile
     |  +- org.apache.curator:curator-recipes:jar:2.7.1:compile
     |  \- org.apache.commons:commons-compress:jar:1.4.1:compile
     |     \- org.tukaani:xz:jar:1.0:compile
     \- org.apache.hadoop:hadoop-mapreduce-client-core:jar:2.7.4:compile
        +- org.apache.hadoop:hadoop-yarn-common:jar:2.7.4:compile
        |  +- org.apache.hadoop:hadoop-yarn-api:jar:2.7.4:compile
        |  \- javax.xml.bind:jaxb-api:jar:2.2.2:compile
        |     +- javax.xml.stream:stax-api:jar:1.0-2:compile
        |     \- javax.activation:activation:jar:1.1:compile
        \- io.netty:netty:jar:3.6.2.Final:compile
  </code></pre>
  
  <p>Any ideas how to resolve this issue?</p>