若在尝试创建AWS Neptune Notebook时遇到问题，则有可能是因为化身(ARN)保存存储库的位置在错误的IAM(user)中。

可使用以下代码示例来确认存储库的位置是否已正确保存在IAM(user)中：

import boto3
client = boto3.client('sagemaker')

response = client.list_notebook_instances()
for instance in response['NotebookInstances']:
    status = instance['NotebookInstanceStatus']
    arn = instance['NotebookInstanceArn']
    if status == 'InService':
        response = client.describe_notebook_instance(
            NotebookInstanceName=instance['NotebookInstanceName']
        )
        try:
            response = client.list_tags(ResourceArn=arn)
            if 'Team' in response['Tags']:
                print(f'Located {arn}')
                break
        except:
            pass

如果定位不到ARN，则应检查该IAM(user)是否赋予了合适的权限并且存储库是否被正确地推到IAM(user)。