Fix IllegalArgumentException

✅ Solution

IllegalArgumentException in Elasticsearch often arises from providing incorrect or incompatible data types during indexing or querying, such as attempting to index text into a numeric field. To fix this, carefully examine the Elasticsearch mappings to ensure they align with the actual data types being ingested; update the mappings or transform the data to match defined expectations. Specifically, review the CSV ingest process to confirm that numeric or date columns are not being misinterpreted, triggering this error.