# Error: \`fsevents\` module is not installed **URL:** \ **Category:** Kibana\ **Created:** [June 15, 2020, 12:47pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139 "2020-06-15T12:47:09Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![aaron-nimocks](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aaron-nimocks/32/73965_2.png) [@aaron-nimocks](https://discuss.elastic.co/u/aaron-nimocks)\ **Post date:** [June 15, 2020, 12:47pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/1 "2020-06-15T12:47:09Z")
Setting up my development area on MacOS Catalina 10.15.5 (19F101) following [kibana/CONTRIBUTING.md at main ยท elastic/kibana ยท GitHub](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md) When running YARN START I get the below error. ```auto New platform optimizer error Error: `fsevents` module is not installed, most likely because you need to follow the instructions at https://github.com/nodejs/node-gyp/blob/master/macOS_Catalina.md and re-bootstrap Kibana at Rx.defer (/Applications/Elastic/kibana/packages/kbn-optimizer/src/run_optimizer.ts:48:17) at Observable._subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/observable/defer.ts:59:15) at Observable._trySubscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:238:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:219:14) at MergeMapOperator.call (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/operators/mergeMap.ts:100:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:214:25) at DoOperator.call (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/operators/tap.ts:81:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:214:25) at Observable._subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/observable/defer.ts:65:19) at Observable._trySubscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:238:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:219:14) at DoOperator.call (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/operators/tap.ts:81:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:214:25) at Observable._subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/observable/defer.ts:65:19) at Observable._trySubscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:238:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:219:14) error Command failed with exit code 1. ``` On [https://github.com/nodejs/node-gyp/blob/master/macOS\_Catalina.md](https://github.com/nodejs/node-gyp/blob/master/macOS_Catalina.md) where it directs you there is an acid test. My system passes the test. ```auto TMC-acbc3297f415:kibana user$ curl -L https://github.com/nodejs/node-gyp/raw/master/macOS_Catalina_acid_test.sh | bash % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 150 100 150 0 0 358 0 --:--:-- --:--:-- --:--:-- 357 100 495 100 495 0 0 523 0 --:--:-- --:--:-- --:--:-- 523 Command Line Tools version: 11.5.0.0.1.1588476445 ``` Any idea what to try next? ---
**Author:** ![wylie](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wylie/32/81794_2.png) [@wylie](https://discuss.elastic.co/u/wylie)\ **Post date:** [June 15, 2020, 7:26pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/2 "2020-06-15T19:26:37Z")
Those instructions also contain steps to take after your system passes the acid test but fails to run: did you try those? ---
**Author:** ![aaron-nimocks](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aaron-nimocks/32/73965_2.png) [@aaron-nimocks](https://discuss.elastic.co/u/aaron-nimocks)\ **Post date:** [June 15, 2020, 7:29pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/3 "2020-06-15T19:29:08Z")
I don't see any other steps passed acid test. Where do you see additional steps? Maybe I am missing something. > If test succeeded, _you are done_ ! ---
**Author:** ![wylie](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wylie/32/81794_2.png) [@wylie](https://discuss.elastic.co/u/wylie)\ **Post date:** [June 15, 2020, 7:32pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/4 "2020-06-15T19:32:44Z")
> ---
**Author:** ![aaron-nimocks](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aaron-nimocks/32/73965_2.png) [@aaron-nimocks](https://discuss.elastic.co/u/aaron-nimocks)\ **Post date:** [June 15, 2020, 7:46pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/5 "2020-06-15T19:46:20Z")
This is my full error. ```auto TMC-acbc3297f415:kibana user$ yarn start yarn run v1.22.4 $ node scripts/kibana --dev log [13:43:08.874] [warning][plugins-discovery] Explicit plugin paths [/Applications/Elastic/kibana/x-pack] should only be used in development. Relative imports may not work properly in production. log [13:43:08.966] [warning][plugins-discovery] Expect plugin "id" in camelCase, but found: beats_management log [13:43:08.972] [warning][plugins-discovery] Expect plugin "id" in camelCase, but found: triggers_actions_ui log [13:43:20.060] [info][plugins-service] Plugin "visTypeXy" is disabled. log [13:43:20.061] [info][plugins-service] Plugin "ingestManager" is disabled. log [13:43:20.061] [info][plugins-service] Plugin "lists" is disabled. log [13:43:20.061] [info][plugins-service] Plugin "securitySolution" has been disabled since some of its direct or transitive dependencies are missing or disabled. log [13:43:20.097] [warning][legacy-plugins] Unable to scan directory for plugins "/Applications/Elastic/kibana/plugins" log [13:43:21.150] [info][plugins-service] Plugin initialization disabled. log [13:43:21.161] [warning][savedobjects-service] Skipping Saved Object migrations on startup. Note: Individual documents will still be migrated when read or written. New platform optimizer error Error: `fsevents` module is not installed, most likely because you need to follow the instructions at https://github.com/nodejs/node-gyp/blob/master/macOS_Catalina.md and re-bootstrap Kibana at Rx.defer (/Applications/Elastic/kibana/packages/kbn-optimizer/src/run_optimizer.ts:48:17) at Observable._subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/observable/defer.ts:59:15) at Observable._trySubscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:238:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:219:14) at MergeMapOperator.call (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/operators/mergeMap.ts:100:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:214:25) at DoOperator.call (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/operators/tap.ts:81:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:214:25) at Observable._subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/observable/defer.ts:65:19) at Observable._trySubscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:238:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:219:14) at DoOperator.call (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/operators/tap.ts:81:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:214:25) at Observable._subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/observable/defer.ts:65:19) at Observable._trySubscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:238:19) at Observable.subscribe (/Applications/Elastic/kibana/node_modules/rxjs/src/internal/Observable.ts:219:14) error Command failed with exit code 1. info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command. ``` The acid test part passes for me. It says if it passes you are good. If not do the other steps. > If test succeeded, _you are done_ ! You should be ready to install `node-gyp` . > > If test failed, there is a problem with your Xcode Command Line Tools installation. [Continue to Solutions](https://github.com/nodejs/node-gyp/blob/master/macOS_Catalina.md#Solutions). What other steps on this page am I missing? ---
**Author:** ![wylie](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wylie/32/81794_2.png) [@wylie](https://discuss.elastic.co/u/wylie)\ **Post date:** [June 15, 2020, 7:54pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/6 "2020-06-15T19:54:02Z")
Okay. Did you try running `yarn kbn bootstrap` before running `yarn start`? ---
**Author:** ![aaron-nimocks](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aaron-nimocks/32/73965_2.png) [@aaron-nimocks](https://discuss.elastic.co/u/aaron-nimocks)\ **Post date:** [June 15, 2020, 7:54pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/7 "2020-06-15T19:54:52Z")
Yes. Everything works until I get to yarn start with no errors. ```auto TMC-acbc3297f415:kibana user$ yarn kbn bootstrap yarn run v1.22.4 $ node scripts/kbn bootstrap info [kibana] running yarn $ node ./preinstall_check [1/5] ๐Ÿ” Validating package.json... [2/5] ๐Ÿ” Resolving packages... warning Resolution field "typescript@3.9.5" is incompatible with requested version "typescript@~3.7.2" success Already up-to-date. succ 15 bootsrap builds are cached โœจ Done in 4.39s. ``` ---
**Author:** ![wylie](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wylie/32/81794_2.png) [@wylie](https://discuss.elastic.co/u/wylie)\ **Post date:** [June 15, 2020, 8:19pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/8 "2020-06-15T20:19:14Z")
There is nothing obviously wrong with your setup. As it shows in our contributing guide, we advice using `yarn kbn clean` to reset everything and then try those steps again. Some of our operations folks have also asked whether you have the `kibana/node_modules/fsevents` folder or if it's missing. ---
**Author:** ![aaron-nimocks](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aaron-nimocks/32/73965_2.png) [@aaron-nimocks](https://discuss.elastic.co/u/aaron-nimocks)\ **Post date:** [June 15, 2020, 8:21pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/9 "2020-06-15T20:21:56Z")
There is no kibana/node\_modules/fsevents I checked that earlier and I attempted to copy/paste another one based on a system drive search and it threw more errors. Where do I find the correct one? ---
**Author:** ![spalger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spalger/32/14092_2.png) [@spalger](https://discuss.elastic.co/u/spalger)\ **Post date:** [June 15, 2020, 8:31pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/10 "2020-06-15T20:31:03Z")
There isn't a "correct one" to copy unfortunately, it needs to be built by yarn during bootstrap. If you run `yarn --force` in the root of the Kibana directory what output do you get? ---
**Author:** ![aaron-nimocks](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aaron-nimocks/32/73965_2.png) [@aaron-nimocks](https://discuss.elastic.co/u/aaron-nimocks)\ **Post date:** [June 15, 2020, 8:32pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/11 "2020-06-15T20:32:14Z")
Ran clean and now bootstraping again. Looks like the folder is there now. I am guessing when it imported packages the first time it just didn't grab it for whatever reason. Thanks for the help. ---
**Author:** ![spalger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spalger/32/14092_2.png) [@spalger](https://discuss.elastic.co/u/spalger)\ **Post date:** [June 15, 2020, 8:32pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/12 "2020-06-15T20:32:55Z")
Yeah, in this scenario yarn doesn't know it needs to try reinstalling `fsevents` again, doing a clean will force it to. Glad it's working now. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 13, 2020, 8:40pm UTC](https://discuss.elastic.co/t/error-fsevents-module-is-not-installed/237139/13 "2020-07-13T20:40:06Z")
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