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{"error":{"root_cause":[{"type":"query_shard_exception","reason":"failed to create query: Cannot search on field [brand] since it is not indexed.","index_uuid":"yQMyHgorTO6zVCulUVWTCA","index":"magento2_product_1_v14515"}],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[{"shard":0,"index":"magento2_product_1_v14515","node":"PybsyHTKRFyqgL-57wfZfA","reason":{"type":"query_shard_exception","reason":"failed to create query: Cannot search on field [brand] since it is not indexed.","index_uuid":"yQMyHgorTO6zVCulUVWTCA","index":"magento2_product_1_v14515","caused_by":{"type":"illegal_argument_exception","reason":"Cannot search on field [brand] since it is not indexed."}}}]},"status":400}

Error log record number: c8804fff7c1d35e87636e4d375426f59a5fc3cc5243dc9926653fae3473d9d0d