问今天文件突然传不上去了，以下是接口返回？

今天文件突然传不上去了，以下是接口返回

Qcloud\Cos\Exception\ServiceResponseException: Cos Error Code: PolicyFull,

Status Code: 400,

Cos Request ID: ........

Cos Error Type: client,

Cos Error Message: your policy or acl has reached the limit,

User-Agent: cos-php-sdk-v5/1.1.3 Guzzle/3.9.3 curl/7.47.0 PHP/7.0.25-0ubuntu0.16.04.1