Clover plugin failed to load for Sonarqube 7.3 community addition, using java 1.8.
java.lang.IllegalStateException: Fail to load plugin Clover [clover]
at org.sonar.server.plugins.ServerExtensionInstaller.installExtensions(ServerExtensionInstaller.java:82)
at org.sonar.server.platform.platformlevel.PlatformLevel4.start(PlatformLevel4.java:586)
at org.sonar.server.platform.Platform.start(Platform.java:211)
at org.sonar.server.platform.Platform.startLevel34Containers(Platform.java:185)
at org.sonar.server.platform.Platform.access$500(Platform.java:46)
at org.sonar.server.platform.Platform$1.lambda$doRun$0(Platform.java:119)
at org.sonar.server.platform.Platform$AutoStarterRunnable.runIfNotAborted(Platform.java:371)
at org.sonar.server.platform.Platform$1.doRun(Platform.java:119)
at org.sonar.server.platform.Platform$AutoStarterRunnable.run(Platform.java:355)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoClassDefFoundError: org/sonar/api/batch/Sensor
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at org.sonar.classloader.ClassRealm.loadClassFromSelf(ClassRealm.java:125)
at org.sonar.classloader.ParentFirstStrategy.loadClass(ParentFirstStrategy.java:37)
at org.sonar.classloader.ClassRealm.loadClass(ClassRealm.java:87)
at org.sonar.classloader.ClassRealm.loadClass(ClassRealm.java:76)
at org.sonar.plugins.clover.CloverPlugin.getExtensions(CloverPlugin.java:39)
at org.sonar.api.SonarPlugin.define(SonarPlugin.java:51)
at org.sonar.server.plugins.ServerExtensionInstaller.installExtensions(ServerExtensionInstaller.java:72)
… 9 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.sonar.api.batch.Sensor
at org.sonar.classloader.ParentFirstStrategy.loadClass(ParentFirstStrategy.java:39)
at org.sonar.classloader.ClassRealm.loadClass(ClassRealm.java:87)
at org.sonar.classloader.ClassRealm.loadClass(ClassRealm.java:76)
… 25 common frames omitted