# Elastic Search - how to interpret this exception

**URL:** <https://discuss.elastic.co/t/elastic-search-how-to-interpret-this-exception/265273>\
**Category:** Elasticsearch\
**Created:** [February 24, 2021, 4:00am UTC](https://discuss.elastic.co/t/elastic-search-how-to-interpret-this-exception/265273 "2021-02-24T04:00:24Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![nages](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/nages/32/46943_2.png) [@nages](https://discuss.elastic.co/u/nages)\
**Post date:** [February 24, 2021, 4:00am UTC](https://discuss.elastic.co/t/elastic-search-how-to-interpret-this-exception/265273/1 "2021-02-24T04:00:24Z")

</div>

This is the code I am running and it is missing custom analyzer name . And I got the following error

```auto
{
  "error": {
    "root_cause": [
      {
        "type": "settings_exception",
        "reason": "Failed to get setting group for [index.analysis.analyzer.] setting prefix and setting [index.analysis.analyzer.filter] because of a missing '.'"
      }
    ],
    "type": "settings_exception",
    "reason": "Failed to get setting group for [index.analysis.analyzer.] setting prefix and setting [index.analysis.analyzer.filter] because of a missing '.'"
  },
  "status": 500
}

```

Code snippet ( I am aware of what is the mistake, we need to supply custom analyzer name ). I would like know how to interpret the above exception to arrive to valid solution.

```auto
PUT myindex5
{
  "settings": {
    "analysis": {
      "char_filter": {
        "my_char_filter":{
          "type":"mapping",
          "mappings":["$ => dollar"]
        }
      },
      "filter": {
        "my_stopwords":{
          "type":"stop",
          "stopwords":["the"]
        }
      }, 
      "analyzer": {
        
         "type":"custom",
         "char_filter":["html_strip","my_char_filter"],
         "tokenizer":"standard",
         "filter":["lowercase","my_stopwords"]
       
      
      }
    }
  }
}

```

---

<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:** [March 24, 2021, 4:01am UTC](https://discuss.elastic.co/t/elastic-search-how-to-interpret-this-exception/265273/2 "2021-03-24T04:01:07Z")

</div>

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