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org.apache.commons.discovery.DiscoveryException: Class org.apache.commons.logging.impl.SLF4JLogFactory does not implement org.apache.commons.logging.LogFactory	at org.apache.commons.discovery.tools.ClassUtils.verifyAncestory(ClassUtils.java:135)	at org.apache.commons.discovery.tools.SPInterface.verifyAncestory(SPInterface.java:156)	at org.apache.commons.discovery.tools.SPInterface.newInstance(SPInterface.java:150)	at org.apache.commons.discovery.tools.DiscoverClass.newInstance(DiscoverClass.java:534)	at org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:373)	at org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:333)	at org.apache.axis.components.logger.LogFactory$1.run(LogFactory.java:45)	at java.security.AccessController.doPrivileged(Native Method)	at org.apache.axis.components.logger.LogFactory.getLogFactory(LogFactory.java:41)	at org.apache.axis.components.logger.LogFactory.(LogFactory.java:33)	at org.apache.axis.handlers.BasicHandler.(BasicHandler.java:43)	at org.apache.axis.client.Service.getAxisClient(Service.java:104)	at org.apache.axis.client.Service.(Service.java:113)	at hudson.plugins.jira.soap.JiraSoapServiceServiceLocator.(JiraSoapServiceServiceLocator.java:12)	at hudson.plugins.jira.JiraSite.createSession(JiraSite.java:141)	at hudson.plugins.jira.Updater.perform(Updater.java:68)	at hudson.plugins.jira.JiraIssueUpdater.perform(JiraIssueUpdater.java:29)	at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:45)	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:772)	at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:736)	at hudson.model.Build$BuildExecution.post2(Build.java:183)	at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:685)	at hudson.model.Run.execute(Run.java:1765)	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)	at hudson.model.ResourceController.execute(ResourceController.java:88)	at hudson.model.Executor.run(Executor.java:233)