为什么在安装Sitecore 9时出现此错误？

Question

我遵循官方文档-“ Sitecore Experience Platform 9.0 Update 1”，并且在运行下面的powershell脚本之后

 ...
#install client certificate for xconnect 
$certParams = @{     
    Path = "$PSScriptRoot\xconnect-createcert.json"     
    CertificateName = "$prefix.xconnect_client" 
} 
18: Install-SitecoreConfiguration @certParams -Verbose <----------------

#install solr cores for xdb 
$solrParams = @{     
    Path = "$PSScriptRoot\xconnect-solr.json"     
    SolrUrl = $SolrUrl     
    SolrRoot = $SolrRoot     
    SolrService = $SolrService     
    CorePrefix = $prefix 
    Name = "SC9"
} 
Install-SitecoreConfiguration @solrParams 
...

我遇到错误...我不明白我做错了什么。请帮帮我！