Error "java.lang.IllegalStateException: Could not read child element: parent" is generated for a maven module

[cmoulliard]

Issue

The following error is generated when we compile a maven module where there is no maven pom parent

Error

Caused by: java.lang.IllegalStateException: Could not read child element: parent
    at io.ap4k.project.MavenInfo.lambda$getElement$6 (MavenInfo.java:145)
    at java.util.Optional.orElseThrow (Optional.java:290)
    at io.ap4k.project.MavenInfo.getElement (MavenInfo.java:145)
    at io.ap4k.project.MavenInfo.getParentVersion (MavenInfo.java:109)
    at io.ap4k.project.MavenInfo.getVersion (MavenInfo.java:89)
    at io.ap4k.project.MavenInfo.<init> (MavenInfo.java:45)
    at io.ap4k.project.MavenInfoReader.getInfo (MavenInfoReader.java:45)
    at io.ap4k.project.MavenInfoReader.getInfo (MavenInfoReader.java:29)
    at io.ap4k.project.FileProjectFactory.lambda$getProjectInfo$2 (FileProjectFactory.java:78)
    at java.util.Optional.map (Optional.java:215)
    at io.ap4k.project.FileProjectFactory.getProjectInfo (FileProjectFactory.java:78)
    at io.ap4k.project.FileProjectFactory.createInternal (FileProjectFactory.java:59)
    at io.ap4k.project.FileProjectFactory.create (FileProjectFactory.java:48)
    at io.ap4k.project.AptProjectFactory.createInternal (AptProjectFactory.java:52)
    at io.ap4k.project.AptProjectFactory.create (AptProjectFactory.java:42)
    at io.ap4k.processor.AbstractAnnotationProcessor.init (AbstractAnnotationProcessor.java:54)