title: Maven clean command: java.util.Collections.UnmodifiableRandomAccessList to property of type java.util.ArrayList
body: <p>When executing the clean maven command, the following error occurs:</p>
  
  <blockquote>
    <p>Failed to execute goal
    org.codehaus.mojo:findbugs-maven-plugin:3.0.0:findbugs (findbugs) on
     Unable to parse configuration of mojo
    org.codehaus.mojo:findbugs-maven-plugin:3.0.0:findbugs for parameter
    pluginArtifacts: Cannot assign configuration entry 'pluginArtifacts'
    with value '${plugin.artifacts}' of type
    java.util.Collections.UnmodifiableRandomAccessList to property of type
    java.util.ArrayList.</p>
  </blockquote>
  
  <p>I have version 2.6 for Apache Maven. Do you have any idea how can I solve this problem?</p>