ElasticSearch error when using the html_strip char filter

gistfile1.sh

# Remove old data
curl -XDELETE "http://localhost:9200/test"

# Create index with settings
curl -XPOST "http://localhost:9200/test" -d '
{
  "settings": {
    "index": {
      "analysis": {
        "analyzer": {
          "title": {
            "type": "custom",
            "tokenizer": "standard",
            "filter": [
              "standard",
              "asciifolding",
              "lowercase",
              "stop_mixed"
            ]
          },
          "partial_title": {
            "type": "custom",
            "tokenizer": "standard",
            "filter": [
              "standard",
              "asciifolding",
              "lowercase",
              "small_edgeNgram",
              "stop_mixed"
            ]
          },
          "html_content": {
            "type": "custom",
            "tokenizer": "letter",
            "filter": [
              "standard",
              "asciifolding",
              "lowercase",
              "stop_mixed"
            ],
            "char_filter": "html_strip"
          }
        },
        "filter": {
          "small_edgeNgram": {
            "side": "front,",
            "max_gram": 10,
            "min_gram": 1,
            "type": "edgeNGram"
          },
          "stop_mixed": {
            "type": "stop",
            "stopwords": [
              "_french_",
              "_english_"
            ],
            "remove_trailing": false
          }
        }
      }
    }
  }
}
'

# Define mapping
curl -XPOST "http://localhost:9200/test/quiz/_mapping" -d '
{
  "quiz": {
    "_all": {
      "enabled": false
    },
    "properties": {
      "description": {
        "type": "string",
        "store": true,
        "analyzer": "html_content"
      },
      "space_id": {
        "type": "integer",
        "store": true
      },
      "title": {
        "type": "string",
        "store": true,
        "index_analyzer": "partial_title",
        "search_analyzer": "title"
      }
    }
  }
}
'

# Index documents
curl -XPUT "http://localhost:9200/_bulk" -d '
{"index":{"_index":"test","_type":"quiz","_id":1}}
{"title":"test","description":"<p>hello, this is a test about removing questions and answers<\\/p>","space_id":18}
{"index":{"_index":"test","_type":"quiz","_id":2}}
{"title":"my test quiz","description":"","space_id":24}

'

logs

[2015-01-21 16:52:30,119][DEBUG][action.bulk              ] [Arkady Rossovich] [test][3] failed to execute bulk item (index) index {[test][quiz][2], source[{"title":"my test quiz","description":"","space_id":24}]}
java.lang.NoClassDefFoundError: Could not initialize class org.apache.lucene.analysis.charfilter.HTMLStripCharFilter
	at org.elasticsearch.indices.analysis.PreBuiltCharFilters$1.create(PreBuiltCharFilters.java:37)
	at org.elasticsearch.indices.analysis.PreBuiltCharFilters$2.create(PreBuiltCharFilters.java:62)
	at org.elasticsearch.index.analysis.CustomAnalyzer.initReader(CustomAnalyzer.java:95)
	at org.apache.lucene.analysis.AnalyzerWrapper.initReader(AnalyzerWrapper.java:117)
	at org.apache.lucene.analysis.AnalyzerWrapper.initReader(AnalyzerWrapper.java:117)
	at org.apache.lucene.analysis.Analyzer.tokenStream(Analyzer.java:178)
	at org.apache.lucene.document.Field.tokenStream(Field.java:554)
	at org.apache.lucene.index.DefaultIndexingChain$PerField.invert(DefaultIndexingChain.java:597)
	at org.apache.lucene.index.DefaultIndexingChain.processField(DefaultIndexingChain.java:342)
	at org.apache.lucene.index.DefaultIndexingChain.processDocument(DefaultIndexingChain.java:301)
	at org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:241)
	at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:451)
	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1539)
	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1254)
	at org.elasticsearch.index.engine.internal.InternalEngine.innerIndex(InternalEngine.java:563)
	at org.elasticsearch.index.engine.internal.InternalEngine.index(InternalEngine.java:492)
	at org.elasticsearch.index.shard.service.InternalIndexShard.index(InternalIndexShard.java:409)
	at org.elasticsearch.action.bulk.TransportShardBulkAction.shardIndexOperation(TransportShardBulkAction.java:446)
	at org.elasticsearch.action.bulk.TransportShardBulkAction.shardOperationOnPrimary(TransportShardBulkAction.java:157)
	at org.elasticsearch.action.support.replication.TransportShardReplicationOperationAction$AsyncShardOperationAction.performOnPrimary(TransportShardReplicationOperationAction.java:535)
	at org.elasticsearch.action.support.replication.TransportShardReplicationOperationAction$AsyncShardOperationAction$1.run(TransportShardReplicationOperationAction.java:434)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)

output

{"acknowledged":true}{"acknowledged":true}{"acknowledged":true}{"took":4,"errors":true,"items":[{"index":{"_index":"test","_type":"quiz","_id":"1","status":500,"error":"NoClassDefFoundError[Could not initialize class org.apache.lucene.analysis.charfilter.HTMLStripCharFilter]"}},{"index":{"_index":"test","_type":"quiz","_id":"2","status":500,"error":"NoClassDefFoundError[Could not initialize class org.apache.lucene.analysis.charfilter.HTMLStripCharFilter]"}}]}