RequestError: RequestError(400, 'search_phase_execution_exception', 'runtime error')

[ScottishFold007]

when I run Searching_with_ElasticTransformers.ipynb, this bug showed up：
import logging
logging.getLogger().setLevel(logging.DEBUG)

query='4G智能移动单兵'

print('CONTEXTUAL SEARCH RESULTS...')
df1=et.search(query,'Title',type='dense',embedder=embed_wrapper, size = 1000)
display(select_search_results(df1))

Then, What is the cause of this bug?

[lizekui]

Just install ES 7.8, the notebook's output return normally. @ScottishFold007
https://www.elastic.co/guide/en/elasticsearch/reference/7.8/docker.html

[MichaelMachine]

self.es.search(
index=index_name,
body={
"size": size,
"query": script_query,
"_source": {"includes": [f'{field}_embedding']}
}
)