TransportError: TransportError(429, 'circuit_breaking_exception', '[parent] Data too large,

Dear dadoonet,
I am trying to push more than 10000 data to elk.

df1=df.to_dict('records')
def generator(df1):
    for c, line in enumerate(df1):
        yield {
        '_index':'in-dev-patient-summary-research_str', 
        '_id':line.get('summarized_test_data_id'),
        '_source':{
            'loinc_nm':line.get('loinc_nm'),
            'test_type':line.get('test_type'),
            'hos_patient_id':line.get('hos_patient_id'),
            'isactive':line.get('isactive'),
            
        }
             }
res=helpers.bulk(es,generator(df1),request_timeout=3600)