kubeedge: When I add an edge to cloud,error occurs and reports[fail to signCerts! error:unable to ParseECPrivateKey: x509: failed to parse private key (use ParsePKCS1PrivateKey instead for this key format)]

What happened: the edge is successfully join to the cloud by using “./keadm join --cloudcore-ipport=:10000 --token=” sentence,but error occurs when I use “edgecore” to add an edge end to the cloud end,error occurs and reports[fail to signCerts! error:unable to ParseECPrivateKey: x509: failed to parse private key (use ParsePKCS1PrivateKey instead for this key format)]

What you expected to happen: it could be added to the cloud and no error occurs

How to reproduce it (as minimally and precisely as possible):use./keadm join --cloudcore-ipport=<ip>:10000 --token=<token> to add the edge end while do not use keadm to create the cloud end

Anything else we need to know?:

Environment:

• KubeEdge version(e.g. cloudcore/edgecore --version): 1.3.1

CloudSide Environment:

• Hardware configuration (e.g. lscpu):1cpu 2gram
• OS (e.g. cat /etc/os-release):Centos7
• Kernel (e.g. uname -a):Linux new 3.10.0-1062.1.2.el7.x86_64 #1 SMP Mon Sep 30 14:19:46 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
• Go version (e.g. go version): go1.14.1 linux/amd64
• Others:kubernates version:1.15.0

EdgeSide Environment:

• edgecore version (e.g. edgecore --version):1.3.1
• Hardware configuration (e.g. lscpu):1cpu 2gram
• OS (e.g. cat /etc/os-release):Centos7
• Kernel (e.g. uname -a):Linux new 3.10.0-1062.1.2.el7.x86_64 #1 SMP Mon Sep 30 14:19:46 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
• Go version (e.g. go version): go version go1.14.1 linux/amd64
• Others: