Plugin module confluence.extra.calendar:calendarpluginextractor is incompatible with this version of Confluence. You will need to upgrade to a newer version of the Calendar Plugin plugin. java.lang.NoSuchMethodError: org.apache.lucene.document.Document.add(Lorg/apache/lucene/document/Field;)V
java.lang.NoSuchMethodError: org.apache.lucene.document.Document.add(Lorg/apache/lucene/document/Field;)V
	at com.atlassian.confluence.extra.calendar.extractor.CalendarExtractor.indexCalendars(CalendarExtractor.java:76)
	at com.atlassian.confluence.extra.calendar.extractor.CalendarExtractor.addFields(CalendarExtractor.java:53)
	at com.atlassian.confluence.plugin.descriptor.ExtractorModuleDescriptor$BackwardsCompatibleExtractor.addFields(ExtractorModuleDescriptor.java:40)
	at com.atlassian.bonnie.search.BaseDocumentBuilder.getDocument(BaseDocumentBuilder.java:30)
	at com.atlassian.confluence.search.lucene.tasks.AddDocumentIndexTask.perform(AddDocumentIndexTask.java:35)
	at com.atlassian.confluence.search.lucene.bonnie.BulkWriterAction.perform(BulkWriterAction.java:31)
	at com.atlassian.bonnie.LuceneConnection.withWriter(LuceneConnection.java:247)
	at com.atlassian.bonnie.LuceneConnection.withWriter(LuceneConnection.java:237)
	at com.atlassian.confluence.search.lucene.DefaultConfluenceIndexManager.processTasks(DefaultConfluenceIndexManager.java:208)
	at com.atlassian.confluence.search.lucene.DefaultConfluenceIndexManager.flushQueue(DefaultConfluenceIndexManager.java:117)
	at sun.reflect.GeneratedMethodAccessor162.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:324)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:296)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:177)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy25.flushQueue(Unknown Source)
	at com.atlassian.confluence.search.lucene.IndexQueueFlusher.executeJob(IndexQueueFlusher.java:30)
	at com.atlassian.confluence.setup.quartz.AbstractClusterAwareQuartzJobBean.surroundJobExecutionWithLogging(AbstractClusterAwareQuartzJobBean.java:64)
	at com.atlassian.confluence.setup.quartz.AbstractClusterAwareQuartzJobBean.executeInternal(AbstractClusterAwareQuartzJobBean.java:47)
	at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:86)
	at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
	at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)