Hi Mark, really appreciated your help!
this is the full log

May 20, 2018 10:41:27 PM hudson.model.Run execute
INFO: project-name #319 main build action completed: FAILURE
May 20, 2018 10:41:27 PM jenkins.plugins.slack.ActiveNotifier completed
WARNING: Project project-name has no Slack configuration.
May 20, 2018 10:43:23 PM org.eclipse.jetty.server.session.Session 
beginInvalidate
INFO: Session node048asxnoizepb18kiq7qs8g5p83 already being invalidated
May 20, 2018 10:43:30 PM hudson.ExpressionFactory2$JexlExpression evaluate
WARNING: Caught exception evaluating: descriptor.helpFile in 
/job/project-name/configure. Reason: 
java.lang.reflect.InvocationTargetException
java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor298.invoke(Unknown Source)
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at 
org.apache.commons.jexl.util.PropertyExecutor.execute(PropertyExecutor.java:125)
at 
org.apache.commons.jexl.util.introspection.UberspectImpl$VelGetterImpl.invoke(UberspectImpl.java:314)
at 
org.apache.commons.jexl.parser.ASTArrayAccess.evaluateExpr(ASTArrayAccess.java:185)
at 
org.apache.commons.jexl.parser.ASTIdentifier.execute(ASTIdentifier.java:75)
at org.apache.commons.jexl.parser.ASTReference.execute(ASTReference.java:83)
at org.apache.commons.jexl.parser.ASTReference.value(ASTReference.java:57)
at 
org.apache.commons.jexl.parser.ASTReferenceExpression.value(ASTReferenceExpression.java:51)
at org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:80)
at 
hudson.ExpressionFactory2$JexlExpression.evaluate(ExpressionFactory2.java:74)
at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:58)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
at org.apache.commons.jelly.tags.core.ForEachTag.doTag(ForEachTag.java:150)
at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
at 
org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
at 
org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
at 
org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
at org.apache.commons.jelly.tags.core.WhenTag.doTag(WhenTag.java:46)
at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)
at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)
at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
at 
org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:95)
at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:95)
at org.kohsuke.stapler.jelly.IncludeTag.doTag(IncludeTag.java:147)
at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:95)
at org.kohsuke.stapler.jelly.IncludeTag.doTag(IncludeTag.java:147)
at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
at 
org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
at 
org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
at 
org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
at 
org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
at 
org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
at 
org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
at 
org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.apache.commons.jelly.tags.core.CoreTagLibrary$1.run(CoreTagLibrary.java:98)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)
at 
org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)
at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at 
org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)
at 
org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)
at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:95)
at 
org.kohsuke.stapler.jelly.DefaultScriptInvoker.invokeScript(DefaultScriptInvoker.java:63)
at 
org.kohsuke.stapler.jelly.DefaultScriptInvoker.invokeScript(DefaultScriptInvoker.java:53)
at org.kohsuke.stapler.jelly.JellyFacet$1.dispatch(JellyFacet.java:97)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:715)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:845)
at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:248)
at 
org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:715)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:845)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)
at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:841)
at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1650)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:157)
at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:105)
at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
at 
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
at 
hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
at 
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at 
jenkins.security.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:117)
at 
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at 
org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
at 
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at 
org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
at 
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at 
org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
at 
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at 
jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:93)
at 
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at 
org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
at 
hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:67)
at 
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at 
hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:90)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
at 
org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
at 
hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
at 
org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
at 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)
at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at 
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:190)
at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1253)
at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)
at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)
at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)
at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1155)
at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.Server.handle(Server.java:564)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:317)
at 
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
at 
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:110)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)
at 
org.eclipse.jetty.util.thread.Invocable.invokePreferred(Invocable.java:128)
at 
org.eclipse.jetty.util.thread.Invocable$InvocableExecutor.invoke(Invocable.java:222)
at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:294)
at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:199)
at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoClassDefFoundError: 
org/eclipse/jgit/transport/RemoteConfig
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.getDeclaredMethods(Class.java:1975)
at org.kohsuke.stapler.ClassDescriptor.findMethods(ClassDescriptor.java:149)
at org.kohsuke.stapler.ClassDescriptor.<init>(ClassDescriptor.java:85)
at 
org.kohsuke.stapler.lang.KlassNavigator$1.getFunctions(KlassNavigator.java:216)
at 
org.kohsuke.stapler.lang.KlassNavigator$1.getFunctions(KlassNavigator.java:141)
at org.kohsuke.stapler.lang.Klass.getFunctions(Klass.java:98)
at org.kohsuke.stapler.KlassDescriptor.<init>(KlassDescriptor.java:27)
at org.kohsuke.stapler.MetaClass.buildDispatchers(MetaClass.java:105)
at org.kohsuke.stapler.MetaClass.<init>(MetaClass.java:93)
at org.kohsuke.stapler.WebApp.getMetaClass(WebApp.java:204)
at 
org.kohsuke.stapler.jelly.groovy.GroovyFacet.createRequestDispatcher(GroovyFacet.java:109)
at org.kohsuke.stapler.RequestImpl.getView(RequestImpl.java:257)
at org.kohsuke.stapler.RequestImpl.getView(RequestImpl.java:252)
at hudson.model.Descriptor.getHelpFile(Descriptor.java:750)
at hudson.model.Descriptor.getHelpFile(Descriptor.java:732)
at hudson.model.Descriptor.getHelpFile(Descriptor.java:721)
... 164 more
Caused by: java.lang.ClassNotFoundException: 
org.eclipse.jgit.transport.RemoteConfig
at 
jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1374)
at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1327)
at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1080)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 182 more

May 20, 2018 10:43:47 PM hudson.model.Run execute
INFO: project-name #320 main build action completed: FAILURE
May 20, 2018 10:43:47 PM jenkins.plugins.slack.ActiveNotifier completed
WARNING: Project project-name has no Slack configuration.
El domingo, 20 de mayo de 2018, 19:36:46 (UTC-3), Mark Waite escribió:
>
> I suspect the last thing in the Jenkins log is much less helpful for 
> diagnosis than the early contents of the Jenkins log.  Somewhere in the 
> early portions of the Jenkins log I would expect to find a good hint that 
> something is unable to start.
>
> On Sun, May 20, 2018 at 4:24 PM Kernel Panic <[email protected] 
> <javascript:>> wrote:
>
>> Thank you very much for the explanation, I will try to restore the old 
>> plugin version, and by the way this is the last thing on jenkins log
>>
>> Caused by: java.lang.NullPointerException
>>
>> at 
>> org.jenkinsci.plugins.github.config.GitHubPluginConfig.constructDefaultUrl(GitHubPluginConfig.java:228)
>>
>> at 
>> org.jenkinsci.plugins.github.config.GitHubPluginConfig.getHookUrl(GitHubPluginConfig.java:116)
>>
>> ... 341 more
>>
>>
>> May 20, 2018 9:00:55 PM hudson.ExpressionFactory2$JexlExpression evaluate
>>
>> WARNING: Caught exception evaluating: descriptor.helpFile in 
>> /job/project-name/configure. Reason: 
>> java.lang.reflect.InvocationTargetException
>>
>> java.lang.reflect.InvocationTargetException
>> at sun.reflect.GeneratedMethodAccessor298.invoke(Unknown Source)Caused 
>> by: java.lang.NoClassDefFoundError: org/eclipse/jgit/transport/RemoteConfig
>>
>> at java.lang.Class.getDeclaredMethods0(Native Method)
>>
>> at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
>>
>> at java.lang.Class.getDeclaredMethods(Class.java:1975)
>>
>> at 
>> org.kohsuke.stapler.ClassDescriptor.findMethods(ClassDescriptor.java:149)
>>
>> at org.kohsuke.stapler.ClassDescriptor.<init>(ClassDescriptor.java:85)
>>
>> at 
>> org.kohsuke.stapler.lang.KlassNavigator$1.getFunctions(KlassNavigator.java:216)
>>
>> at 
>> org.kohsuke.stapler.lang.KlassNavigator$1.getFunctions(KlassNavigator.java:141)
>>
>> at org.kohsuke.stapler.lang.Klass.getFunctions(Klass.java:98)
>>
>> at org.kohsuke.stapler.KlassDescriptor.<init>(KlassDescriptor.java:27)
>>
>> at org.kohsuke.stapler.MetaClass.buildDispatchers(MetaClass.java:105)
>>
>> at org.kohsuke.stapler.MetaClass.<init>(MetaClass.java:93)
>>
>> at org.kohsuke.stapler.WebApp.getMetaClass(WebApp.java:204)
>>
>> at 
>> org.kohsuke.stapler.jelly.groovy.GroovyFacet.createRequestDispatcher(GroovyFacet.java:109)
>>
>> at org.kohsuke.stapler.RequestImpl.getView(RequestImpl.java:257)
>>
>> at org.kohsuke.stapler.RequestImpl.getView(RequestImpl.java:252)
>>
>> at hudson.model.Descriptor.getHelpFile(Descriptor.java:750)
>>
>> at hudson.model.Descriptor.getHelpFile(Descriptor.java:732)
>>
>> at hudson.model.Descriptor.getHelpFile(Descriptor.java:721)
>>
>> ... 160 more
>>
>> Caused by: java.lang.ClassNotFoundException: 
>> org.eclipse.jgit.transport.RemoteConfig
>>
>> at 
>> jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1374)
>>
>> at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1327)
>>
>> at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1080)
>>
>> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
>> El domingo, 20 de mayo de 2018, 19:00:03 (UTC-3), Mark Waite escribió:
>>
>>> On Sun, May 20, 2018 at 2:32 PM Kernel Panic  wrote:
>>>
>>>> If there was a manual update, ( I can see some some git-client git and 
>>>> git hub hpi/jpi  files under plugin directory ) how can I revert it back?
>>>>
>>>> Thanks you very much!
>>>>
>>>>
>>> If one or more plugins were upgraded from a prior version to the current 
>>> version, then there would be a "<plugin-name>.bak" file in the /plugins/ 
>>> subdirectory of the Jenkins home directory.  For example, I recently 
>>> upgraded the docker-commons plugin and there is now a "docker-commons.bak" 
>>> file (previous docker-commons plugin version) and a "docker-commons.jpi" 
>>> file (currentl version of the docker-commons plugin).
>>>
>>> Plugins which have not been upgraded (at least on my installation) 
>>> appear as "<plugin-name>.jpi" without a matching "<plugin-name>.bak".
>>>
>>> If you want to replace an existing plugin at the file system level with 
>>> a different version, it may be enough to stop Jenkins, perform a backup, 
>>> then repalce the "<plugin-name>.jpi" (or "<plugin-name>.hpi" if it exists 
>>> instead) with the replacement version.
>>>
>>> You might also read the Jenkins log file to see if there are hints in 
>>> the log file that might give an indication why the plugin is unable to 
>>> start.
>>>
>>> Mark Waite
>>>  
>>>
>>
>>>> El domingo, 20 de mayo de 2018, 16:54:48 (UTC-3), Mark Waite escribió:
>>>>>
>>>>> Have you checked in the "Plugin Manager" section of "Manage Jenkins" 
>>>>> to confirm that there are no warnings about unsatisfied dependencies?  
>>>>>
>>>>> I think that type of message might appear if a new git plugin were 
>>>>> manually uploaded to a system that hadn't yet updated the git client 
>>>>> plugin 
>>>>> to the latest version.
>>>>>
>>>>> On Sun, May 20, 2018 at 1:50 PM Kernel Panic <[email protected]> 
>>>>> wrote:
>>>>>
>>>>>> Hello
>>>>>> I inherited a server with git 2.107.3 installed, it seems the 
>>>>>> previous admin upgraded it, now when I got to project config I get this 
>>>>>> error:
>>>>>>
>>>>>> org.apache.commons.jelly.JellyTagException: 
>>>>>> jar:file:/var/cache/jenkins/war/WEB-INF/lib/jenkins-core-2.107.3.jar!/lib/hudson/project/config-scm.jelly:36:91:
>>>>>>  
>>>>>> <st:include> Type org.eclipse.jgit.transport.RemoteConfig not present
>>>>>>
>>>>>> If I scroll down to Source Management I do not see the git option, 
>>>>>> only None, CVS, and CVS Project set.
>>>>>> If I got to Manage Jenkins / Configure System I get the same java 
>>>>>> error.
>>>>>>
>>>>>> The git plugin version is 3.9.0 and I do no see an option to 
>>>>>> downgrade, so Im lost in here, any  idea how can I troubleshoot this 
>>>>>> issue?
>>>>>> The servert is Debian 8.2 
>>>>>>
>>>>>> Thanks in advance
>>>>>> Regards
>>>>>>
>>>>>> -- 
>>>>>> You received this message because you are subscribed to the Google 
>>>>>> Groups "Jenkins Users" group.
>>>>>> To unsubscribe from this group and stop receiving emails from it, 
>>>>>> send an email to [email protected].
>>>>>> To view this discussion on the web visit 
>>>>>> https://groups.google.com/d/msgid/jenkinsci-users/44b9093d-75d9-4f3f-9a01-39d953c3a64c%40googlegroups.com
>>>>>>  
>>>>>> <https://groups.google.com/d/msgid/jenkinsci-users/44b9093d-75d9-4f3f-9a01-39d953c3a64c%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>>>> .
>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>
>>>>> -- 
>>>> You received this message because you are subscribed to the Google 
>>>> Groups "Jenkins Users" group.
>>>> To unsubscribe from this group and stop receiving emails from it, send 
>>>> an email to [email protected].
>>>>
>>> To view this discussion on the web visit 
>>>> https://groups.google.com/d/msgid/jenkinsci-users/1b980dec-bbb8-4c5c-889b-9ca1b1890355%40googlegroups.com
>>>>  
>>>> <https://groups.google.com/d/msgid/jenkinsci-users/1b980dec-bbb8-4c5c-889b-9ca1b1890355%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>> .
>>>> For more options, visit https://groups.google.com/d/optout.
>>>>
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>

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