Specify explicit plugin versions to avoid an error under Maven 3.6.1:
[WARNING] Error injecting: org.apache.maven.report.projectinfo.CiManagementReport
java.lang.NoClassDefFoundError: org/apache/maven/doxia/siterenderer/DocumentContent
<build>
<pluginManagement>
<plugins>
+ <!-- https://stackoverflow.com/a/51093732/28465 -->
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-site-plugin</artifactId>
+ <version>3.7.1</version>
+ </plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-project-info-reports-plugin</artifactId>
+ <version>3.0.0</version>
+ </plugin>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
<version>${maven-javadoc-plugin.version}</version>
