I have checked the web.log file, I am getting this error when I restart the application service.
2018.06.06 15:42:42 INFO web[][o.s.p.l.LdapSettingsManager] User mapping: LdapUserMapping{baseDn=DC=company,DC=corp, request=(&(objectCategory=Person)(sAMAccountName=*)), realNameAttribute=cn, emailAttribute=mail}
2018.06.06 15:42:42 ERROR web[][o.s.s.p.Platform] Background initialization failed. Stopping SonarQube
java.lang.NullPointerException: null
at org.sonar.plugins.ldap.LdapGroupMapping.<init>(LdapGroupMapping.java:70)
at org.sonar.plugins.ldap.LdapSettingsManager.getGroupMappings(LdapSettingsManager.java:118)
at org.sonar.plugins.ldap.LdapRealm.init(LdapRealm.java:58)
at org.sonar.server.user.SecurityRealmFactory.start(SecurityRealmFactory.java:84)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.picocontainer.lifecycle.ReflectionLifecycleStrategy.invokeMethod(ReflectionLifecycleStrategy.java:110)
at org.picocontainer.lifecycle.ReflectionLifecycleStrategy.start(ReflectionLifecycleStrategy.java:89)
at org.picocontainer.injectors.AbstractInjectionFactory$LifecycleAdapter.start(AbstractInjectionFactory.java:84)
at org.picocontainer.behaviors.AbstractBehavior.start(AbstractBehavior.java:169)
at org.picocontainer.behaviors.Stored$RealComponentLifecycle.start(Stored.java:132)
at org.picocontainer.behaviors.Stored.start(Stored.java:110)
at org.picocontainer.DefaultPicoContainer.potentiallyStartAdapter(DefaultPicoContainer.java:1016)
at org.picocontainer.DefaultPicoContainer.startAdapters(DefaultPicoContainer.java:1009)
at org.picocontainer.DefaultPicoContainer.start(DefaultPicoContainer.java:767)
at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:134)
at org.sonar.server.platform.platformlevel.PlatformLevel.start(PlatformLevel.java:90)
at org.sonar.server.platform.platformlevel.PlatformLevel4.start(PlatformLevel4.java:584)
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)
2018.06.06 15:42:42 INFO web[][o.s.p.StopWatcher] Stopping process