team calendar plugin does not work after upgrade.

2015-06-29 10:24:25,731 WARN [catalina-exec-1520] [opensymphony.xwork.util.OgnlValueStack] findValue Caught an exception while evaluating expression 'calendarHtml' against value stack
 -- referer: http://collab.lge.com/main/dashboard.action;jsessionid=DDFDC9EFE36F541B0F9F1E5974B5BB2F | url: /main/calendar/mycalendar.action | userName: collab-admin | action: mycalendar
java.lang.RuntimeException: Caught an Ognl exception while getting property calendarHtml
        at com.opensymphony.xwork.util.CompoundRootAccessor.getProperty(CompoundRootAccessor.java:112)
        at ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1603)
        at ognl.ASTProperty.getValueBody(ASTProperty.java:96)
        at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:171)
        at ognl.SimpleNode.getValue(SimpleNode.java:193)
        at ognl.Ognl.getValue(Ognl.java:333)
        at ognl.Ognl.getValue(Ognl.java:310)
        at com.opensymphony.xwork.util.OgnlValueStack.findValue(OgnlValueStack.java:141)
        at com.opensymphony.webwork.views.velocity.WebWorkVelocityContext.internalGet(WebWorkVelocityContext.java:72)
        at org.apache.velocity.context.AbstractContext.get(AbstractContext.java:193)
        at org.apache.velocity.context.InternalContextAdapterImpl.get(InternalContextAdapterImpl.java:286)
        at org.apache.velocity.runtime.parser.node.ASTReference.getVariableValue(ASTReference.java:843)
        at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:222)
        at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:342)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336)

2015-06-29 10:24:18,634 ERROR [catalina-exec-1139] [plugin.descriptor.web.ConfluenceWebInterfaceManager] getHtml Failed to render web panel: com.atlassian.plugin.web.descriptors.DefaultWebPanelModuleDescriptor$ContextAwareWebPanel@77e43c2
 -- referer: http://collab.lge.com/main/login.action?os_destination=%2Fdashboard.action%3Bjsessionid%3DDDFDC9EFE36F541B0F9F1E5974B5BB2F | url: /main/dashboard.action;jsessionid=DDFDC9EFE36F541B0F9F1E5974B5BB2F | userName: collab-admin | action: dashboard
com.atlassian.activeobjects.internal.ActiveObjectsInitException: bundle [com.atlassian.confluence.extra.team-calendars]
        at com.atlassian.activeobjects.osgi.TenantAwareActiveObjects$1$1$1.call(TenantAwareActiveObjects.java:105)
        at com.atlassian.activeobjects.osgi.TenantAwareActiveObjects$1$1$1.call(TenantAwareActiveObjects.java:92)
        at com.atlassian.sal.core.executor.ThreadLocalDelegateCallable.call(ThreadLocalDelegateCallable.java:42)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
        at java.util.concurrent.FutureTask.run(FutureTask.java:166)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:724)
Caused by: org.springframework.transaction.TransactionTimedOutException: Transaction timed out: deadline was Mon Jun 29 09:08:57 KST 2015
        at org.springframework.transaction.support.ResourceHolderSupport.checkTransactionTimeout(ResourceHolderSupport.java:141)
        at org.springframework.transaction.support.ResourceHolderSupport.getTimeToLiveInMillis(ResourceHolderSupport.java:130)
        at org.springframework.transaction.support.ResourceHolderSupport.getTimeToLiveInSeconds(ResourceHolderSupport.java:114)
        at org.springframework.orm.hibernate.SessionFactoryUtils.applyTransactionTimeout(SessionFactoryUtils.java:532)
        at org.springframework.orm.hibernate.HibernateTemplate.prepareQuery(HibernateTemplate.java:1027)