# Error while setting up Kibana Dev Environment

**URL:** <https://discuss.elastic.co/t/error-while-setting-up-kibana-dev-environment/187228>\
**Category:** Kibana\
**Created:** [June 25, 2019, 5:25am UTC](https://discuss.elastic.co/t/error-while-setting-up-kibana-dev-environment/187228 "2019-06-25T05:25:07Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![saravananselvamohan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/saravananselvamohan/32/47407_2.png) [@saravananselvamohan](https://discuss.elastic.co/u/saravananselvamohan)\
**Post date:** [June 25, 2019, 5:25am UTC](https://discuss.elastic.co/t/error-while-setting-up-kibana-dev-environment/187228/1 "2019-06-25T05:25:07Z")

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After running the yarn start command, I am getting this error.  
server log [10:52:28.945] [info][task\_manager] Installing .kibana\_task\_manager index template version: 8000099. server log [10:52:28.951] [warning][task\_manager] PollError [illegal\_argument\_exception] Malformed [mappings] section for type [dynamic], should include an inner object describing the mapping

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**Author:** ![nickpeihl](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/nickpeihl/32/112622_2.png) [@nickpeihl](https://discuss.elastic.co/u/nickpeihl)\
**Post date:** [June 25, 2019, 3:33pm UTC](https://discuss.elastic.co/t/error-while-setting-up-kibana-dev-environment/187228/2 "2019-06-25T15:33:51Z")

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Are you running from the `master` branch of Kibana? Maybe you need to pull in the latest updates. I haven't seen an error like this since February. [https://github.com/elastic/kibana/pull/30261](https://github.com/elastic/kibana/pull/30261)

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**Author:** ![saravananselvamohan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/saravananselvamohan/32/47407_2.png) [@saravananselvamohan](https://discuss.elastic.co/u/saravananselvamohan)\
**Post date:** [June 26, 2019, 6:53am UTC](https://discuss.elastic.co/t/error-while-setting-up-kibana-dev-environment/187228/3 "2019-06-26T06:53:02Z")

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Yes I used Kibana master branch. Thanks for your reply. I used Kibana 6.6 and its working fine. But I have some compatibility warnings for react packages while running yarn kbn bootstrap

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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:** [July 24, 2019, 6:53am UTC](https://discuss.elastic.co/t/error-while-setting-up-kibana-dev-environment/187228/4 "2019-07-24T06:53:02Z")

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