Suddenly trying to list the xowiki pages of our company site 
https://www.oasisoftware.com via /xowiki/admin/list  I get an error related to the ::__csrf_token.
I recently installed the latest naviserver-4.99.14 and I'm running xotcl-core 0.149 and xowiki 5.9.1d10 on oacs-5-9.
I can add and edit the xowiki pages and the site apparently works well. Here is an excerpt of the error:
wrong # args: should be "set var val"
    while executing
"set ::__csrf_token"
    invoked from within
"subst {
      ::html::input -type hidden -name __csrf_token -value [set ::__csrf_token] {}
    }"
    ("uplevel" body line 2)
    invoked from within
"uplevel $script"
    (procedure "if" line 34)
    invoked from within
"if {[info exists ::__csrf_token]} {
      ::html::input -type hidden -name __csrf_token -value [set ::__csrf_token] {}
    }"
    (procedure "::html::CSRFToken" line 2)
    invoked from within
"::html::CSRFToken"
    invoked from within
"html::th -class list {
      html::input -type checkbox -name __bulkaction  -onclick "acs_ListCheckAll('$name', this.checked)"  -title "Mark/Unmark a..."
    (procedure "render" line 4)
    ::template::t1::__columns::objects ::xo::Table::TABLE::BulkAction->render
Help!