语法错误？代码可以在没有行16-17的情况下正常运行，但否则会出错

Question

我正在尝试使用CSV文件将数据导入DynamoDB表，并且连接和所有内容均正常运行，但是，我在第16-17行中连续收到语法错误。在CSV文件中，列出的对象与代码中的变量完全相同。 （我有2列以上，大约415行，所以这很令人沮丧）

我尝试删除多余的行以将其限制为1，但仍然在'name'：row.split（'，'）[0]上出错。

import boto3

s3 = boto3.client('s3')
dynamodb = boto3.resource('dynamodb')
def csv_reader(event, context):
    bucket = event['Records'][0]['s3']['bucket']['name']
    key = event['Records'][0]['s3']['object']['key']
    obj = s3.get_object(Bucket=bucket, Key=key)

    rows = obj['Body'].read().split('\n')
    table = dynamodb.Table('ServiceOfferings')

    with table.batch_writer() as batch:
        for row in rows:
            batch.put_item(Item={
                'name':row.split(',')[0],
                'business_criticality':row.split(',')[1]
            })



An error occurred (ValidationException) when calling the BatchWriteItem 
operation: The provided key element does not match the schema: 
ClientError
Traceback (most recent call last):
File "/var/task/lambda_function.py", line 17, in csv_reader
'business_criticality':row.split(',')[1]
File "/var/runtime/boto3/dynamodb/table.py", line 101, in put_item
self._add_request_and_process({'PutRequest': {'Item': Item}})
File "/var/runtime/boto3/dynamodb/table.py", line 110, in 
_add_request_and_process
self._flush_if_needed()
File "/var/runtime/boto3/dynamodb/table.py", line 131, in 
_flush_if_needed
self._flush()
File "/var/runtime/boto3/dynamodb/table.py", line 137, in _flush
RequestItems={self._table_name: items_to_send})
File "/var/runtime/botocore/client.py", line 357, in _api_call
return self._make_api_call(operation_name, kwargs)
File "/var/runtime/botocore/client.py", line 661, in _make_api_call
raise error_class(parsed_response, operation_name)
ClientError: An error occurred (ValidationException) when calling the 
BatchWriteItem operation: The provided key element does not match the 
schema

结果应将信息应用于DynamoDB表，该表具有5列左右的行和415行。