Coldfusion-创建thumb时无法访问templ文件夹

我对以下行有问题：

<cfimage action="read" name="myImage" source="#ExpandPath("../../banner/#upload.clientfile#")#" />

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这似乎是一个配置问题。联系你的主人。以下是包含更多信息的页面：

<cfapplication sessionmanagement="true">
<cfoutput>#GetTempDirectory()#</cfoutput>
<cfif IsDefined ("FORM")>
  <cfif structKeyExists(form, "uploadfile")>
    <cfset destination = expandPath("../../banner")>
    <cfif not directoryExists(destination)>
      <cfdirectory action="create" directory="#destination#">
    </cfif>
  <cffile action="upload" filefield="uploadfile" destination="#destination#" nameConflict="makeUnique" result="upload">
  <cfdump var="#upload.clientfile#">
  <cfimage action="read" name="myImage" source="#ExpandPath("../../banner/#upload.clientfile#")#" />
</cfif>