Splunk plugin blocked Jenkins startup due to NPE. Am not what caused this though.

Marking this as critical since this is blocking Jenkins startup i.e. when accessing jenkins home all we see is below NPE exception.

I changed value of enabled to 'false' @ <jenkins_home>/com.splunk.splunkjenkins.SplunkJenkinsInstallation.xml to bring back jenkins.

Below is stacktrace

java.lang.NullPointerException
at com.splunk.splunkjenkins.utils.SplunkLogService.enqueue(SplunkLogService.java:179)
at com.splunk.splunkjenkins.utils.SplunkLogService.send(SplunkLogService.java:95)
at com.splunk.splunkjenkins.JdkSplunkLogHandler.publish(JdkSplunkLogHandler.java:53)
at java.util.logging.Logger.log(Logger.java:738)
at java.util.logging.Logger.doLog(Logger.java:765)
at java.util.logging.Logger.log(Logger.java:876)
at jenkins.model.Jenkins.<init>(Jenkins.java:988)
at hudson.model.Hudson.<init>(Hudson.java:86)
at hudson.model.Hudson.<init>(Hudson.java:82)
at hudson.WebAppMain$3.run(WebAppMain.java:231)
Caused: hudson.util.HudsonFailedToLoad
at hudson.WebAppMain$3.run(WebAppMain.java:248)