SCHWERWIEGEND: Failed Loading plugin Change Log History v1.4 (changelog-history)
java.io.IOException: Change Log History v1.4 failed to load.
 - Jenkins Subversion Plug-in v2.6 is older than required. To fix, install v2.6-20160601.015946-1 or later.
        at hudson.PluginWrapper.resolvePluginDependencies(PluginWrapper.java:621)
        at hudson.PluginManager$2$1$1.run(PluginManager.java:511)
        at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
        at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
        at jenkins.model.Jenkins$7.runTask(Jenkins.java:1026)
        at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
        at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)

There are dependency errors loading some plugins:

    Change Log History v1.4
        Jenkins Subversion Plug-in v2.6 is older than required. To fix, install v2.6-20160601.015946-1 or later.