这可能是由于您没有正确设置身份验证凭据所致。您可以尝试使用以下代码示例来验证您的凭据：

from google.cloud import bigquery

Set path to the credential file

credentials_path = '/path/to/your/credentials.json'

Create a new BigQuery client object with your credentials

client = bigquery.Client.from_service_account_json(credentials_path)

Use the client object to interact with BigQuery

query_job = client.query("""SELECT * FROM my_dataset.my_table""") results = query_job.result()

print('Query results:') for row in results: print(row)

确保您已将凭据文件的路径更改为实际路径。如果您仍然无法进行身份验证，请确保您具有正确的访问权限，并且您正在使用正确的凭据。