# Connect\_exception null error during reindex

**URL:** <https://discuss.elastic.co/t/connect-exception-null-error-during-reindex/141293>\
**Category:** Elasticsearch\
**Created:** [July 24, 2018, 5:48am UTC](https://discuss.elastic.co/t/connect-exception-null-error-during-reindex/141293 "2018-07-24T05:48:30Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![jamesjin](https://avatars.discourse-cdn.com/v4/letter/j/e0b2c6/32.png) [@jamesjin](https://discuss.elastic.co/u/jamesjin)\
**Post date:** [July 24, 2018, 5:48am UTC](https://discuss.elastic.co/t/connect-exception-null-error-during-reindex/141293/1 "2018-07-24T05:48:30Z")

</div>

Hello,

I'm trying to use the /\_reindex from remote api with the query:

POST /\_reindex

```
{
  "source": {
    "index": "existing_index"
  },
  "dest": {
    "index": "new_index"
  }
}

```

I got:

```
{
	"error": {
		"root_cause": [{
			"type": "connect_exception",
			"reason": null
		}],
		"type": "connect_exception",
		"reason": null
	},
	"status": 500
}

```

What should I do on this error?

Thank you!

---

<div class="post-metadata">

**Author:** ![zqc0512](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/zqc0512/32/32141_2.png) [@zqc0512](https://discuss.elastic.co/u/zqc0512)\
**Post date:** [July 24, 2018, 6:11am UTC](https://discuss.elastic.co/t/connect-exception-null-error-during-reindex/141293/2 "2018-07-24T06:11:01Z")

</div>

show the master node for detailed log  
maybe add setting about index.

---

<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:** [August 21, 2018, 6:11am UTC](https://discuss.elastic.co/t/connect-exception-null-error-during-reindex/141293/3 "2018-08-21T06:11:02Z")

</div>

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