# ERROR Unable to locate appender "${sys:ls.log.format}\_rolling" for logger config "root"

**URL:** <https://discuss.elastic.co/t/error-unable-to-locate-appender-sys-ls-log-format-rolling-for-logger-config-root/107942>\
**Category:** Logstash\
**Created:** [November 16, 2017, 1:04pm UTC](https://discuss.elastic.co/t/error-unable-to-locate-appender-sys-ls-log-format-rolling-for-logger-config-root/107942 "2017-11-16T13:04:32Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![hobo\_zo](https://avatars.discourse-cdn.com/v4/letter/h/cc9497/32.png) [@hobo\_zo](https://discuss.elastic.co/u/hobo_zo)\
**Post date:** [December 15, 2017, 2:54am UTC](https://discuss.elastic.co/t/error-unable-to-locate-appender-sys-ls-log-format-rolling-for-logger-config-root/107942/7 "2017-12-15T02:54:18Z")

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🙂Thank U!

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_[View the full topic](https://discuss.elastic.co/t/error-unable-to-locate-appender-sys-ls-log-format-rolling-for-logger-config-root/107942)._