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Check that the Elasticsearch client library is installed and imported correctly in the Go application.
Verify that the version of the Elasticsearch client library being used is compatible with the version of Elasticsearch being used.
Ensure that the code is using the correct method names and syntax as specified in the Elasticsearch client library documentation.
Verify that the Elasticsearch cluster is available and accessible to the Go application.
Check for any typos or syntax errors in the code that could be causing the error.
Restart the Go application and see if the error persists. If it does, review the above steps again or seek further assistance.