# Graylog "ERROR \[Version\] Unable to read version.properties, this build has no version number" **URL:** \ **Category:** Graylog Central (peer support)\ **Created:** [February 16, 2018, 9:11am UTC](https://community.graylog.org/t/graylog-error-version-unable-to-read-version-properties-this-build-has-no-version-number/4211 "2018-02-16T09:11:46Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![vidyajsv](https://avatars.discourse-cdn.com/v4/letter/v/e56c9b/32.png) [@vidyajsv](https://community.graylog.org/u/vidyajsv)\ **Post date:** [February 16, 2018, 9:11am UTC](https://community.graylog.org/t/graylog-error-version-unable-to-read-version-properties-this-build-has-no-version-number/4211/1 "2018-02-16T09:11:46Z")
Hi , I have installed graylog version 2.3 along with elastic search 5.6 on RHEL 7.2. I dont see the plugins getting loading . Below are the errors seen in logs - ```auto 2018-02-16T03:05:35.963-06:00 ERROR [Version] Unable to read version.properties, this build has no version number. java.lang.IllegalArgumentException: Input string is NULL or empty at com.github.zafarkhaja.semver.VersionParser.(VersionParser.java:162) ~[graylog.jar:?] at com.github.zafarkhaja.semver.VersionParser.parseValidSemVer(VersionParser.java:194) ~[graylog.jar:?] at com.github.zafarkhaja.semver.Version.valueOf(Version.java:265) ~[graylog.jar:?] at org.graylog2.plugin.Version.fromClasspathProperties(Version.java:219) [graylog.jar:?] at org.graylog2.plugin.Version.fromClasspathProperties(Version.java:199) [graylog.jar:?] at org.graylog2.plugin.Version.fromClasspathProperties(Version.java:173) [graylog.jar:?] at org.graylog2.plugin.Version.(Version.java:66) [graylog.jar:?] at org.graylog2.bootstrap.CmdLineTool.(CmdLineTool.java:90) [graylog.jar:?] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:88) ~[?:1.8.0] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:57) ~[?:1.8.0] at java.lang.reflect.Constructor.newInstance(Constructor.java:437) [?:2.6 (10-13-2016)] at com.github.rvesse.airline.parser.ParserUtil.createInstance(ParserUtil.java:39) [graylog.jar:?] at com.github.rvesse.airline.DefaultCommandFactory.createInstance(DefaultCommandFactory.java:25) [graylog.jar:?] at com.github.rvesse.airline.parser.ParserUtil.createInstance(ParserUtil.java:94) [graylog.jar:?] at com.github.rvesse.airline.parser.ParseResult.getCommand(ParseResult.java:114) [graylog.jar:?] at com.github.rvesse.airline.parser.command.CliParser.parse(CliParser.java:54) [graylog.jar:?] at com.github.rvesse.airline.Cli.parse(Cli.java:107) [graylog.jar:?] at com.github.rvesse.airline.Cli.parse(Cli.java:93) [graylog.jar:?] at org.graylog2.bootstrap.Main.main(Main.java:43) [graylog.jar:?] 2018-02-16T03:05:36.319-06:00 ERROR [CmdLineTool] Plugin "Elastic Beats Input" requires version 2.3.0 - not loading! 2018-02-16T03:05:36.320-06:00 ERROR [CmdLineTool] Plugin "Collector" requires version 2.3.0 - not loading! 2018-02-16T03:05:36.322-06:00 ERROR [CmdLineTool] Plugin "Enterprise Integration Plugin" requires version 2.3.0 - not loading! 2018-02-16T03:05:36.334-06:00 ERROR [CmdLineTool] Plugin "MapWidgetPlugin" requires version 2.3.0 - not loading! 2018-02-16T03:05:36.345-06:00 ERROR [CmdLineTool] Plugin "Pipeline Processor Plugin" requires version 2.3.0 - not loading! 2018-02-16T03:05:36.357-06:00 ERROR [CmdLineTool] Plugin "Anonymous Usage Statistics" requires version 2.3.0 - not loading! ``` How do we resolve this ? ---
**Author:** ![jochen](https://sea2.discourse-cdn.com/flex016/user_avatar/community.graylog.org/jochen/32/8_2.png) [@jochen](https://community.graylog.org/u/jochen)\ **Post date:** [February 16, 2018, 10:06am UTC](https://community.graylog.org/t/graylog-error-version-unable-to-read-version-properties-this-build-has-no-version-number/4211/2 "2018-02-16T10:06:41Z")
How exactly have you installed Graylog? Also, please try using the latest stable version (Graylog 2.4.3 as of the time of writing) if you’re creating a new cluster. ---
**Author:** ![vidyajsv](https://avatars.discourse-cdn.com/v4/letter/v/e56c9b/32.png) [@vidyajsv](https://community.graylog.org/u/vidyajsv)\ **Post date:** [February 19, 2018, 5:49am UTC](https://community.graylog.org/t/graylog-error-version-unable-to-read-version-properties-this-build-has-no-version-number/4211/3 "2018-02-19T05:49:53Z")
I have used rpm -Uvh graylog-server-2.4.3-1.noarch.rpm to install the rpm . I tried to install the latest stable server version now and is getting the same error graylog-server.noarch 2.4.3-1 ---
**Author:** ![jochen](https://sea2.discourse-cdn.com/flex016/user_avatar/community.graylog.org/jochen/32/8_2.png) [@jochen](https://community.graylog.org/u/jochen)\ **Post date:** [February 19, 2018, 8:11am UTC](https://community.graylog.org/t/graylog-error-version-unable-to-read-version-properties-this-build-has-no-version-number/4211/4 "2018-02-19T08:11:49Z")
What’s the complete output of the following command? ```nohighlight rpm -V graylog-server ``` How exactly are you starting Graylog on your system? ---
**Author:** ![vidyajsv](https://avatars.discourse-cdn.com/v4/letter/v/e56c9b/32.png) [@vidyajsv](https://community.graylog.org/u/vidyajsv)\ **Post date:** [February 19, 2018, 9:10am UTC](https://community.graylog.org/t/graylog-error-version-unable-to-read-version-properties-this-build-has-no-version-number/4211/5 "2018-02-19T09:10:24Z")
I have started the service using below command sudo systemctl start graylog-server.service [root@sit-ihs-01 ~]# rpm -V graylog-server S.5…T. c /etc/graylog/server/server.conf ---
**Author:** ![jochen](https://sea2.discourse-cdn.com/flex016/user_avatar/community.graylog.org/jochen/32/8_2.png) [@jochen](https://community.graylog.org/u/jochen)\ **Post date:** [February 19, 2018, 3:16pm UTC](https://community.graylog.org/t/graylog-error-version-unable-to-read-version-properties-this-build-has-no-version-number/4211/6 "2018-02-19T15:16:29Z")
Try purging the `graylog-server` completely and reinstall it with `yum install graylog-server` after the Graylog RPM repository has been added to your system. Or even better, try starting with a fresh installation of RHEL 7.2. FWIW, I’ve just tested the [step-by-step installation guide for CentOS](http://docs.graylog.org/en/2.4/pages/installation/os/centos.html) in a [Vagrant box](https://app.vagrantup.com/centos/boxes/7) and it worked as advertised. ---
**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/graylog/original/3X/c/7/c7c09c6b5099570133d6502b83f50ba4430de5b6.png) [@system](https://community.graylog.org/u/system)\ **Post date:** [March 5, 2018, 3:29pm UTC](https://community.graylog.org/t/graylog-error-version-unable-to-read-version-properties-this-build-has-no-version-number/4211/7 "2018-03-05T15:29:37Z")
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