Erro na requisição da api

ao executar uma pergunta, aparece este erro:

!pip install llama-index llama-index-experimental -q
!pip install llama-index-llms-groq -q

from google.colab import userdata
chave = userdata.get('chave') 

from llama_index.core import Settings
from llama_index.llms.groq import Groq
Settings.llm = Groq(model='llama-70b-8192', api_key=chave,  groq_client_kwargs={"api_key": chave})

import pandas as pd
df = pd.read_csv('/content/vendas.csv')

from llama_index.experimental.query_engine import PandasQueryEngine
query_engine = PandasQueryEngine(df=df, verbose=True)

response = query_engine.query(
    "Qual é a forma de pagamento mais utilizada pelos clientes?"
)

NotFoundError: Error code: 404 - {'error': {'message': 'The model llama-70b-8192 does not exist or you do not have access to it.', 'type': 'invalid_request_error', 'code': 'model_not_found'}}