[jira] [Created] (FLINK-30929) Add helpful message when ElasticsearchSink.Builder.build() throws a IllegalArgumentException.

[Kenny Wu (Jira)]

Kenny Wu created FLINK-30929:
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             Summary: Add helpful message when 
ElasticsearchSink.Builder.build() throws a IllegalArgumentException.
                 Key: FLINK-30929
                 URL: https://issues.apache.org/jira/browse/FLINK-30929
             Project: Flink
          Issue Type: Improvement
          Components: Connectors / ElasticSearch
    Affects Versions: 1.13.6
            Reporter: Kenny Wu
             Fix For: 1.13.6


Recently, I'm trying to use flink-connector-elasticsearch on my project, and I 



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