添加订阅器件型号后，调用库存订阅测试接口，响应出现I/O error，具体异常如下：
PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target; nested exception is javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
请问该如何解决？是否需要使用公司的二级域名地址来接收订阅推送？
