How to configure a serverless sagemaker endpoint?

I am expermenting with a sagemaker serverless endpoint (sample code below to create an endpoint from aws documentation). but I keep getting error when the endpoint is invoked , has anyone run into this issue - 'Error - / .sagemaker/ts/models/model.mar already exists. Please specify --force/-f option to overwrite the model archive output file' .

response = client.create_endpoint_config(
   EndpointConfigName="<your-endpoint-configuration>",
   ProductionVariants=[
        {
            "ModelName": "<your-model-name>",
            "VariantName": "AllTraffic",
            "ServerlessConfig": {
                "MemorySizeInMB": 2048,
                "MaxConcurrency": 20
            }
        } 
    ]
)