# Logstash 7.16.3 failed to start: "cannot load Java class org.logstash.util.JavaVersion"

**URL:** <https://discuss.elastic.co/t/logstash-7-16-3-failed-to-start-cannot-load-java-class-org-logstash-util-javaversion/296590>\
**Category:** Logstash\
**Created:** [February 8, 2022, 12:10pm UTC](https://discuss.elastic.co/t/logstash-7-16-3-failed-to-start-cannot-load-java-class-org-logstash-util-javaversion/296590 "2022-02-08T12:10:55Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![pikopl](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pikopl/32/100267_2.png) [@pikopl](https://discuss.elastic.co/u/pikopl)\
**Post date:** [February 8, 2022, 12:10pm UTC](https://discuss.elastic.co/t/logstash-7-16-3-failed-to-start-cannot-load-java-class-org-logstash-util-javaversion/296590/1 "2022-02-08T12:10:56Z")

</div>

I installed Logstash OSS ver. 7.16.3 rpm:

```auto
$ sudo rpm -ivh logstash-oss-7.16.3-x86_64.rpm
warning: logstash-oss-7.16.3-x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID d88e42b4: NOKEY
Preparing... ################################# [100%]
Updating / installing...
   1:logstash-oss-1:7.16.3-1 ################################# [100%]
Using bundled JDK: /usr/share/logstash/jdk
Using provided startup.options file: /etc/logstash/startup.options
OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/pleaserun-0.0.32/lib/pleaserun/platform/base.rb:112: warning: constant ::Fixnum is deprecated
Successfully created system startup script for Logstash

```

but got error when tried to run it:

```auto
$ /usr/share/logstash/vendor/jruby/bin/jruby /usr/share/logstash/lib/bootstrap/environment.rb logstash/runner.rb --path.settings /etc/logstash/ --path.data /usr/share/logstash/ -e 'input { stdin { } } output { stdout {} }'
NameError: cannot load Java class org.logstash.util.JavaVersion
         for_name at org/jruby/javasupport/JavaClass.java:292
         for_name at org/jruby/javasupport/JavaClass.java:288
  get_proxy_class at org/jruby/javasupport/JavaUtilities.java:39
      java_import at uri:classloader:/jruby/java/core_ext/object.rb:44
              map at org/jruby/RubyArray.java:2589
      java_import at uri:classloader:/jruby/java/core_ext/object.rb:37
           <main> at /usr/share/logstash/logstash-core/lib/logstash/runner.rb:17
          require at org/jruby/RubyKernel.java:974
           <main> at /usr/share/logstash/lib/bootstrap/environment.rb:92

```

Could you help me to solve this issue? Is this related with missing java jars in the classpath?

Thank you in advance.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 8, 2022, 12:11pm UTC](https://discuss.elastic.co/t/logstash-7-16-3-failed-to-start-cannot-load-java-class-org-logstash-util-javaversion/296590/2 "2022-03-08T12:11:47Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.