# Kibana unable to start (validation error cookie\_session\_storage.js)

**URL:** <https://discuss.elastic.co/t/kibana-unable-to-start-validation-error-cookie-session-storage-js/233787>\
**Category:** Kibana\
**Created:** [May 21, 2020, 5:57pm UTC](https://discuss.elastic.co/t/kibana-unable-to-start-validation-error-cookie-session-storage-js/233787 "2020-05-21T17:57:41Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![kumar\_k](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kumar_k/32/50877_2.png) [@kumar\_k](https://discuss.elastic.co/u/kumar_k)\
**Post date:** [May 21, 2020, 5:57pm UTC](https://discuss.elastic.co/t/kibana-unable-to-start-validation-error-cookie-session-storage-js/233787/1 "2020-05-21T17:57:41Z")

</div>

Hi,

Below error preventing kibana to start. please guide.

'''

log [17:00:36.724] [fatal][root] { ValidationError: child "path" fails because ["path" is not allowed to be empty]

```
at Object.exports.process (D:\Kibana_ELK\kibana-7.7.0-windows-x86_64\kibana-7.7.0-windows-x86_64\node_modules\joi\lib\errors.js:196:19)

at internals.Object._validateWithOptions (D:\Kibana_ELK\kibana-7.7.0-windows-x86_64\kibana-7.7.0-windows-x86_64\node_modules\joi\lib\types\any\index.js:675:31)

at module.exports.internals.Any.root.validate (D:\Kibana_ELK\kibana-7.7.0-windows-x86_64\kibana-7.7.0-windows-x86_64\node_modules\joi\lib\index.js:146:23)

at Object.internals.implementation [as cookie] (D:\Kibana_ELK\kibana-7.7.0-windows-x86_64\kibana-7.7.0-windows-x86_64\node_modules\hapi-auth-cookie\lib\index.js:94:25)

at module.exports.internals.Auth._strategy (D:\Kibana_ELK\kibana-7.7.0-windows-x86_64\kibana-7.7.0-windows-x86_64\node_modules\hapi\lib\auth.js:52:47)

at createCookieSessionStorageFactory (D:\Kibana_ELK\kibana-7.7.0-windows-x86_64\kibana-7.7.0-windows-x86_64\src\core\server\http\cookie_session_storage.js:98:15)

at process._tickCallback (internal/process/next_tick.js:68:7)

```

isJoi: true,

name: 'ValidationError',

details:

at createCookieSessionStorageFactory (D:\Kibana\_ELK\kibana-7.7.0-windows-x86\_64\kibana-7.7.0-windows-x86\_64\src\core\server\http\cookie\_session\_storage.js:98:15)

```
at process._tickCallback (internal/process/next_tick.js:68:7)

```

isJoi: true,

name: 'ValidationError',

details:

[ { message: '"path" is not allowed to be empty',

```
   path: [Array],

   type: 'any.empty',

   context: [Object] } ],

```

\_object:

{ cookie: 'sid',

```
 password: '96bdea990f70c0c2759d0e71b317f1cb',

 validateFunc: [AsyncFunction: validateFunc],

 isSecure: false,

 path: '',

 clearInvalid: false,

 isHttpOnly: true,

 isSameSite: false },

```

annotate: [Function] }  
'''

---

<div class="post-metadata">

**Author:** ![rudolf](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rudolf/32/51200_2.png) [@rudolf](https://discuss.elastic.co/u/rudolf)\
**Post date:** [June 16, 2020, 10:07pm UTC](https://discuss.elastic.co/t/kibana-unable-to-start-validation-error-cookie-session-storage-js/233787/2 "2020-06-16T22:07:12Z")

</div>

Can you please share your `kibana.yml` (be sure to remove any sensitive information).

Please note that your post inadvertently shared your `xpack.security.encryptionKey` please rotate this key.

---

<div class="post-metadata">

**Author:** ![rudolf](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rudolf/32/51200_2.png) [@rudolf](https://discuss.elastic.co/u/rudolf)\
**Post date:** [June 16, 2020, 10:41pm UTC](https://discuss.elastic.co/t/kibana-unable-to-start-validation-error-cookie-session-storage-js/233787/3 "2020-06-16T22:41:35Z")

</div>

It sounds like you might have bumped into this bug: [https://github.com/elastic/kibana/issues/69344](https://github.com/elastic/kibana/issues/69344)

If you kibana.yml has a setting like `server.basePath: ''` or `server.basePath: ""` can you try comment out that setting and see if Kibana starts up?

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 14, 2020, 10:41pm UTC](https://discuss.elastic.co/t/kibana-unable-to-start-validation-error-cookie-session-storage-js/233787/4 "2020-07-14T22:41:41Z")

</div>

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