# Can't install x-pack for logstash 6.0

**URL:** <https://discuss.elastic.co/t/cant-install-x-pack-for-logstash-6-0/104733>\
**Category:** Logstash\
**Created:** [October 20, 2017, 4:11pm UTC](https://discuss.elastic.co/t/cant-install-x-pack-for-logstash-6-0/104733 "2017-10-20T16:11:50Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Cornoualis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/cornoualis/32/23246_2.png) [@Cornoualis](https://discuss.elastic.co/u/Cornoualis)\
**Post date:** [October 30, 2017, 12:26pm UTC](https://discuss.elastic.co/t/cant-install-x-pack-for-logstash-6-0/104733/6 "2017-10-30T12:26:30Z")

</div>

I tried again with a lower version of java (1.8.0\_152), and now I have the following errors:

⇒ ./logstash-plugin install x-pack  
Unhandled Java exception: java.lang.NullPointerException  
java.lang.NullPointerException: null  
put at java/util/Hashtable.java:460  
setProperty at java/util/Properties.java:166  
setProperty at java/lang/System.java:796  
invoke at java/lang/reflect/Method.java:498  
invokeDirectWithExceptionHandling at org/jruby/javasupport/JavaMethod.java:468  
invokeStaticDirect at org/jruby/javasupport/JavaMethod.java:370  
apply\_env\_proxy\_settings at /home/cornoualis/ElasticStack6/logstash-6.0.0-rc1/lib/pluginmanager/proxy\_support.rb:40  
configure\_proxy at /home/cornoualis/ElasticStack6/logstash-6.0.0-rc1/lib/pluginmanager/proxy\_support.rb:71  
 at /home/cornoualis/ElasticStack6/logstash-6.0.0-rc1/lib/pluginmanager/main.rb:26  
runInterpreter at org/jruby/Ruby.java:845  
runInterpreter at org/jruby/Ruby.java:849  
runNormally at org/jruby/Ruby.java:752  
runNormally at org/jruby/Ruby.java:765  
runFromMain at org/jruby/Ruby.java:578  
doRunFromMain at org/jruby/Main.java:417  
internalRun at org/jruby/Main.java:305  
run at org/jruby/Main.java:232  
main at org/jruby/Main.java:204

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