Request Error

can't read "sub_four": no such variable
    while executing
"regsub -all -nocase "***=$one" $copy_body "$sub_four\"$news_path/$sub_five\" $sub_six" copy_body"
    invoked from within
"if ![regexp -nocase {https://} $one] {
	    regexp -nocase {(<a href=)"*([^" ]+)[" ]*(.*>)} $one match sub_four sub_five sub_six

	    ### 4
	    ### ..."
    (procedure "oli_news_relink" line 45)
    invoked from within
"oli_news_relink $news_body $news_path_sohc"
    invoked from within
"set news_body [oli_news_relink $news_body $news_path_sohc]"
    ("uplevel" body line 139)
    invoked from within
"uplevel {
    	  # /packages/oli-news/www/news-item.tcl
ad_page_contract {
    Displays this news item and all messages associated with it.
 
    @aut..."
    (procedure "code::tcl::/web/vtec/packages/oli-news/www/news-item" line 2)
    invoked from within
"code::tcl::$__adp_stub"
    invoked from within
"if { [file exists $__adp_stub.tcl] } {

      # ensure that data source preparation procedure exists and is up-to-date
      adp_init tcl $__adp_stub
..."
    ("uplevel" body line 3)
    invoked from within
"uplevel {

    if { [file exists $__adp_stub.tcl] } {

      # ensure that data source preparation procedure exists and is up-to-date
      adp_init t..."
    (procedure "adp_prepare" line 3)
    invoked from within
"adp_prepare "
    (procedure "template::adp_parse" line 30)
    invoked from within
"template::adp_parse [file root [ad_conn file]] {}"
    (procedure "adp_parse_ad_conn_file" line 7)
    invoked from within
"$handler"
    ("uplevel" body line 2)
    invoked from within
"uplevel $code"
    invoked from within
"ad_try {
	$handler
      } ad_script_abort val {
	# do nothing
      }"
    invoked from within
"rp_serve_concrete_file [ad_conn file]"
    (procedure "rp_serve_abstract_file" line 60)
    invoked from within
"rp_serve_abstract_file "$root/$path""
    ("uplevel" body line 2)
    invoked from within
"uplevel $code"
    invoked from within
"ad_try {
	rp_serve_abstract_file "$root/$path"
	set tcl_url2file([ad_conn url]) [ad_conn file]
	set tcl_url2path_info([ad_conn url]) [ad_conn path_inf..."

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