请求
HttpRequest[{"http_method":"GET","url":"https://api.mch.weixin.qq.com/v3/certificates?algorithm_type=RSA","uri":"https://api.mch.weixin.qq.com/v3/certificates?algorithm_type=RSA","headers":{"headers":{"Authorization":"WECHATPAY2-SHA256-RSA2048 mchid=\"***\",nonce_str=\"5FAKYSGDEvSAUFDiFwrLnanuGGxSVxLS\",timestamp=\"1728721508\",serial_no=\"***\",signature=\"***\"","Accept":" */*","User-Agent":"WechatPay-Java/0.2.12 (Mac OS X/14.6.1) Java/11.0.24 Credential/WechatPay2Credential Validator/ okhttp3/null","Content-Type":"application/json"}}}]
返回：
[{"code":"SYSTEM_ERROR","message":"系统繁忙，请稍后重试"}]
针对微信支付公钥使用介绍可参考：https://pay.weixin.qq.com/docs/merchant/products/platform-certificate/wxp-pub-key-guide.html
参数有误导致的