让检查$key and $iv ， 这是啥？

* Connectio #0 to host api.mch.weixin.qq.com left intact

Decrypting the input $ciphertext failed, please checking your $key and $iv whether or nor correct.

#0 C:\phpstudy_pro\WWW\xiaozhi-api\vendor\wechatpay\wechatpay\bin\CertificateDownloader.php(64): WeChatPay\Crypto\AesGcm::decrypt('\xBD"\xDB\x19g\xA2\xE3\xDA\xD5\x01\xE666\xB4\x19...', 'yixuanchangVmgT...', 'd0c62f7e2505', 'certificate')

#1 [internal function]: CertificateDownloader::{closure}(Object(stdClass))