我使用的是ubuntu 16.04。当我尝试根据自己的需要自定义网络配置时，我面临着这样的错误：
2018-03-20 22:54:33.547 UTC [cauthdsl] deduplicate -> ERRO 52c33 Principal deserialization failure (the supplied identity is not valid: x509: certificate signed by unknown authority (possibly because of "x509: ECDSA verification failure" while trying to verify candidate authority certificate "ca.blockchain-clone.iba"))
这里有configtx.yaml个内容，cryptoconfig.yaml就在这里
我该怎么做才能解决它？