Mixed content error

Could you replace the HTTP_RESPONSE event with this?

when HTTP_RESPONSE {
   if { [HTTP::header exists Location] } {
    HTTP::header remove Server
    HTTP::header replace Location [string map {"http://" "https://"} [string tolower [HTTP::header Location]]]
}
   # Check if response type is text
      if {[HTTP::header value Content-Type] contains "text"}{
      # Replace http:// with https://
      STREAM::expression {@http://@https://@}
      # Enable the stream filter for this response only
      STREAM::enable
      }
}