I getting below exception during deploying guvnor war

16:55:39,500 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-2) MSC00001: Failed to start service jboss.deployment.unit."drools-gunvor.war".WeldService: org.jboss.msc.service.StartException in service jboss.deployment.unit."drools-gunvor.war".WeldService: org.jboss.weld.exceptions.DeploymentException: Exception List with 1 exceptions:
Exception 0 :
org.jboss.weld.exceptions.WeldException: WELD-000049 Unable to invoke [method] @PostConstruct public org.drools.workbench.backend.server.AppSetup.assertPlayground() on org.drools.workbench.backend.server.AppSetup@7f0b4e
at org.jboss.weld.bean.AbstractClassBean.defaultPostConstruct(AbstractClassBean.java:518)
at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget.postConstruct(ManagedBean.java:174)
at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:291)
at org.jboss.weld.context.AbstractContext.get(AbstractContext.java:107)
at org.jboss.weld.bean.proxy.ContextBeanInstance.getInstance(ContextBeanInstance.java:90)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:79)
at org.drools.workbench.backend.server.AppSetup$Proxy$_$$_WeldClientProxy.toString(AppSetup$Proxy$_$$_WeldClientProxy.java)
at org.kie.commons.services.cdi.StartupBeanExtension.runPostConstruct(StartupBeanExtension.java:81)
at org.kie.commons.services.cdi.StartupBeanExtension.afterDeploymentValidation(StartupBeanExtension.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.weld.util.reflection.SecureReflections$13.work(SecureReflections.java:264)
at org.jboss.weld.util.reflection.SecureReflectionAccess.run(SecureReflectionAccess.java:52)
at org.jboss.weld.util.reflection.SecureReflectionAccess.runAsInvocation(SecureReflectionAccess.java:137)
at org.jboss.weld.util.reflection.SecureReflections.invoke(SecureReflections.java:260)
at org.jboss.weld.introspector.jlr.WeldMethodImpl.invokeOnInstance(WeldMethodImpl.java:170)
at org.jboss.weld.introspector.ForwardingWeldMethod.invokeOnInstance(ForwardingWeldMethod.java:51)
at org.jboss.weld.injection.MethodInjectionPoint.invokeOnInstanceWithSpecialValue(MethodInjectionPoint.java:154)
at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:241)
at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:229)
at org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:207)
at org.jboss.weld.bootstrap.events.AbstractContainerEvent.fire(AbstractContainerEvent.java:75)
at org.jboss.weld.bootstrap.events.AbstractDeploymentContainerEvent.fire(AbstractDeploymentContainerEvent.java:46)
at org.jboss.weld.bootstrap.events.AfterDeploymentValidationImpl.fire(AfterDeploymentValidationImpl.java:31)
at org.jboss.weld.bootstrap.WeldBootstrap.validateBeans(WeldBootstrap.java:369)
at org.jboss.as.weld.WeldContainer.start(WeldContainer.java:83)
at org.jboss.as.weld.services.WeldService.start(WeldService.java:76)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.weld.util.reflection.SecureReflections$13.work(SecureReflections.java:264)
at org.jboss.weld.util.reflection.SecureReflectionAccess.run(SecureReflectionAccess.java:52)
at org.jboss.weld.util.reflection.SecureReflectionAccess.runAsInvocation(SecureReflectionAccess.java:137)
at org.jboss.weld.util.reflection.SecureReflections.invoke(SecureReflections.java:260)
at org.jboss.weld.introspector.jlr.WeldMethodImpl.invoke(WeldMethodImpl.java:174)
at org.jboss.weld.bean.AbstractClassBean.defaultPostConstruct(AbstractClassBean.java:516)
... 33 more
Caused by: java.util.NoSuchElementException
at java.util.AbstractList$Itr.next(AbstractList.java:350)
at org.kie.commons.java.nio.fs.jgit.JGitFileSystem$2$1.next(JGitFileSystem.java:149)
at org.kie.commons.java.nio.fs.jgit.JGitFileSystem$2$1.next(JGitFileSystem.java:128)
at org.uberfire.backend.server.repositories.git.GitRepositoryFactoryHelper.newRepository(GitRepositoryFactoryHelper.java:76)
at org.uberfire.backend.server.repositories.git.GitRepositoryFactoryHelper$Proxy$_$$_WeldClientProxy.newRepository(GitRepositoryFactoryHelper$Proxy$_$$_WeldClientProxy.java)
at org.uberfire.backend.server.repositories.RepositoryFactoryImpl.newRepository(RepositoryFactoryImpl.java:36)
at org.uberfire.backend.server.repositories.RepositoryFactoryImpl$Proxy$_$$_WeldClientProxy.newRepository(RepositoryFactoryImpl$Proxy$_$$_WeldClientProxy.java)
at org.uberfire.backend.server.repositories.RepositoryServiceImpl.createRepository(RepositoryServiceImpl.java:120)
at org.uberfire.backend.server.repositories.RepositoryServiceImpl.createRepository(RepositoryServiceImpl.java:111)
at org.uberfire.backend.server.repositories.RepositoryServiceImpl$Proxy$_$$_WeldClientProxy.createRepository(RepositoryServiceImpl$Proxy$_$$_WeldClientProxy.java)
at org.drools.workbench.backend.server.AppSetup.assertPlayground(AppSetup.java:76)
... 43 more

at org.jboss.as.weld.services.WeldService.start(WeldService.java:83)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_14]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_14]
at java.lang.Thread.run(Thread.java:619) [rt.jar:1.6.0_14]
Caused by: org.jboss.weld.exceptions.DeploymentException: Exception List with 1 exceptions: