# Can't install logstash plugins, trying to install them breaks the logstash installation **URL:** \ **Category:** Logstash\ **Created:** [October 12, 2017, 9:37am UTC](https://discuss.elastic.co/t/cant-install-logstash-plugins-trying-to-install-them-breaks-the-logstash-installation/103689 "2017-10-12T09:37:51Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![A.McBride](https://avatars.discourse-cdn.com/v4/letter/a/f17d59/32.png) [@A.McBride](https://discuss.elastic.co/u/A.McBride)\ **Post date:** [October 12, 2017, 9:37am UTC](https://discuss.elastic.co/t/cant-install-logstash-plugins-trying-to-install-them-breaks-the-logstash-installation/103689/1 "2017-10-12T09:37:51Z")
I'm trying to install the email plugin for logstash by using "logstash-plugin install logstash-output-email", however when I do it I get the following error: Validating logstash-output-email Installing logstash-output-email Error Bundler::InstallError, retrying 1/10 An error occurred while installing logstash-core (5.6.2), and Bundler cannot continue. Make sure that `gem install logstash-core -v '5.6.2'` succeeds before bundling. WARNING: can not set Session#timeout=(0) no session context After trying to install the plugin, my logstash won't start anymore and gives the error: Bundler::GemNotFound: Could not find gem 'logstash-output-email (\>= 0) java' in any of the gem sources listed in your Gemfile or installed on this machine. verify\_gemfile\_dependencies\_are\_found! at C:/Users/Admin/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/bundler-1.9.10/lib/bundler/resolver.rb:328 each at org/jruby/RubyArray.java:1613 verify\_gemfile\_dependencies\_are\_found! at C:/Users/Admin/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/bundler-1.9.10/lib/bundler/resolver.rb:307 start at C:/Users/Admin/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/bundler-1.9.10/lib/bundler/resolver.rb:199 resolve at C:/Users/Admin/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/bundler-1.9.10/lib/bundler/resolver.rb:182 resolve at C:/Users/Admin/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/bundler-1.9.10/lib/bundler/definition.rb:192 specs at C:/Users/Admin/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/bundler-1.9.10/lib/bundler/definition.rb:132 specs\_for at C:/Users/Admin/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/bundler-1.9.10/lib/bundler/definition.rb:177 requested\_specs at C:/Users/Admin/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/bundler-1.9.10/lib/bundler/definition.rb:166 requested\_specs at C:/Users/Admin/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/bundler-1.9.10/lib/bundler/environment.rb:18 setup at C:/Users/Admin/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/bundler-1.9.10/lib/bundler/runtime.rb:13 setup at C:/Users/Admin/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/bundler-1.9.10/lib/bundler.rb:122 setup! at C:/Users/Admin/logstash-5.6.2/lib/bootstrap/bundler.rb:67 (root) at C:\Users\Admin\logstash-5.6.2\lib\bootstrap\environment.rb:u6708: Even though this error message says that it can't find the gem in these sources, the files do contain the line gem "logstash-output-email". I'm really confused as to why I can't just install the plugin. Is there something I can do here to make sure the plugin get installed? Thanks, Andrew ---
**Author:** ![jeroiraz](https://avatars.discourse-cdn.com/v4/letter/j/7ea924/32.png) [@jeroiraz](https://discuss.elastic.co/u/jeroiraz)\ **Post date:** [October 12, 2017, 5:41pm UTC](https://discuss.elastic.co/t/cant-install-logstash-plugins-trying-to-install-them-breaks-the-logstash-installation/103689/2 "2017-10-12T17:41:35Z")
Same issue on macOS Sierra and elasticsearch plugin ---
**Author:** ![A.McBride](https://avatars.discourse-cdn.com/v4/letter/a/f17d59/32.png) [@A.McBride](https://discuss.elastic.co/u/A.McBride)\ **Post date:** [October 17, 2017, 10:03am UTC](https://discuss.elastic.co/t/cant-install-logstash-plugins-trying-to-install-them-breaks-the-logstash-installation/103689/3 "2017-10-17T10:03:23Z")
No help to be offered here? I'd really like to be able to install non-default plugins and searching for help has yielded nothing. ---
**Author:** ![gezzi](https://avatars.discourse-cdn.com/v4/letter/g/76d3ee/32.png) [@gezzi](https://discuss.elastic.co/u/gezzi)\ **Post date:** [November 10, 2017, 12:40am UTC](https://discuss.elastic.co/t/cant-install-logstash-plugins-trying-to-install-them-breaks-the-logstash-installation/103689/4 "2017-11-10T00:40:34Z")
I have the same issue with 5.5.3. c:\ELK\v553\logstash-5.5.3\>bin\logstash-plugin.bat install logstash-output-datadog\_metrics Validating logstash-output-datadog\_metrics Installing logstash-output-datadog\_metrics Error Bundler::InstallError, retrying 1/10 An error occurred while installing logstash-core (5.5.3), and Bundler cannot continue. Make sure that `gem install logstash-core -v '5.5.3'` succeeds before bundling. After trying many other recommendations, but shying away from complicated ruby steps (since i don't know ruby), eventually i did what the error says to try ... Make sure that `gem install logstash-core -v '5.5.3'` succeeds before bundling. c:\ELK\v553\logstash-5.5.3\>vendor\jruby\bin\gem install logstash-core -v '5.5.3' jar dependencies for logstash-core-5.5.3-java.gemspec . . . org.apache.logging.log4j:log4j-api:2.6.2 org.apache.logging.log4j:log4j-core:2.6.2 com.fasterxml.jackson.core:jackson-core:2.7.4 com.fasterxml.jackson.core:jackson-databind:2.7.4 com.fasterxml.jackson.module:jackson-module-afterburner:2.7.4 com.fasterxml.jackson.dataformat:jackson-dataformat-cbor:2.7.4 Successfully installed logstash-core-5.5.3-java 1 gem installed c:\ELK\v553\logstash-5.5.3\>bin\logstash-plugin.bat install logstash-output-datadog\_metrics Validating logstash-output-datadog\_metrics Installing logstash-output-datadog\_metrics Installation successful (it was not that simple though. At first the above step "c:\ELK\v553\logstash-5.5.3\>vendor\jruby\bin\gem install logstash-core -v '5.5.3'" failed after downloading many gems because of a weird issue from a java jar that i am not sure how it reached!!! ERROR: While executing gem ... (SystemCallError) Unknown error - Unknown Error (123) - :c:\XXX\lib\com\fasterxml\jackson\core\jackson-databind\2.7.4\jackson-databind-2.7.4.jar So i renamed XXX to YYY and ran again and it worked out. ---
**Author:** ![gezzi](https://avatars.discourse-cdn.com/v4/letter/g/76d3ee/32.png) [@gezzi](https://discuss.elastic.co/u/gezzi)\ **Post date:** [November 13, 2017, 7:29pm UTC](https://discuss.elastic.co/t/cant-install-logstash-plugins-trying-to-install-them-breaks-the-logstash-installation/103689/5 "2017-11-13T19:29:28Z")
maybe my response from a couple of days ago can help ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [December 11, 2017, 7:29pm UTC](https://discuss.elastic.co/t/cant-install-logstash-plugins-trying-to-install-them-breaks-the-logstash-installation/103689/6 "2017-12-11T19:29:34Z")
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