发现错误
最近在用Nodejs发送https请求时候，出现\”Error: UNABLE_TO_VERIFY_LEAF_SIGNATURE\”的错误，错误如下：
events.js:72
throw er; // Unhandled \'error\' event
^
Error: UNABLE_TO_VERIFY_LEAF_SIGNATURE
at SecurePair. (tls.js:1381:32)
at SecurePair.emit (events.js:92:17)
at SecurePair.maybeInitFinished (tls.js:980:10)
at Clear
