tomcat配置阿里云免费SSL证书老报错？

证书在/usr/local/cert/a.pfx，按照阿里云的帮助步骤一直走，老报错

apache-tomcat-8.5.37 java version "1.7.0_80"

    <Connector port="443"
    protocol="HTTP/1.1"
    SSLEnabled="true"
    scheme="https"
    secure="true"
    keystoreFile="/usr/local/cert/a.pfx"
    keystoreType="PKCS12"
    keystorePass="cUV404vb"
    clientAuth="false"
    SSLProtocol="TLSv1+TLSv1.1+TLSv1.2"
    ciphers="TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA256"/>