# Could not find or load main class org.elasticsearch.tools.java\_version\_checker.JavaVersionChecker

**URL:** <https://discuss.elastic.co/t/could-not-find-or-load-main-class-org-elasticsearch-tools-java-version-checker-javaversionchecker/147327>\
**Category:** Elasticsearch\
**Created:** [September 5, 2018, 7:48am UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-org-elasticsearch-tools-java-version-checker-javaversionchecker/147327 "2018-09-05T07:48:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![MuiruriPyrax](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/muiruripyrax/32/35180_2.png) [@MuiruriPyrax](https://discuss.elastic.co/u/MuiruriPyrax)\
**Post date:** [September 5, 2018, 7:48am UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-org-elasticsearch-tools-java-version-checker-javaversionchecker/147327/1 "2018-09-05T07:48:52Z")

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i get this error whenever i run `./bin/elasticsearch`  
Error: Could not find or load main class org.elasticsearch.tools.java\_version\_checker.JavaVersionChecker  
Caused by: java.lang.ClassNotFoundException: org.elasticsearch.tools.java\_version\_checker.JavaVersionChecker

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [October 3, 2018, 7:49am UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-org-elasticsearch-tools-java-version-checker-javaversionchecker/147327/2 "2018-10-03T07:49:04Z")

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