Error in includelet 'weblog-portlet':

invalid command name "::"
    while executing
"::$package_id pretty_link $name"
    (procedure "detail_link" line 8)
    ::xowiki::Portlet->detail_link
    invoked from within
"::xowiki::Portlet detail_link -package_id $package_id -name $name  -instance_attributes $instance_attributes"
    (procedure "render" line 13)
    ::1636175 ::732959::payload::EntryRenderer->render
    invoked from within
"$c render"
    (procedure "render" line 4)
    ::xotcl::__#4UG->render
    invoked from within
"$items render"
    (procedure "render" line 11)
    invoked from within
"next"
    (procedure "render" line 18)
    ::xotcl::__#4UF ::732959::payload::WeblogRenderer->render
    invoked from within
"$w render"
    (procedure "content" line 31)
    ::732959::payload->content
    invoked from within
"[self]::payload content"
    (procedure "get_content" line 4)
    ::732959 ::xowiki::Object->get_content
    invoked from within
"my get_content"
    (procedure "render" line 12)
    invoked from within
"next"
    (procedure "render" line 6)
    ::732959 ::xowiki::portlet::decoration=portlet->render
    invoked from within
"$page render"