site-replace throws an error

[cdw9]

if site-replace = true is in the buildout, the following error is thrown when buildout is run:

2018-08-29 09:47:24 WARNING collective.recipe.plonesite Removed existing Plone Site
Traceback (most recent call last):
  File "/data/intranet/parts/instance1/bin/interpreter", line 298, in <module>
    exec(_val)
  File "<string>", line 1, in <module>
  File "/data/intranet/eggs/collective.recipe.plonesite-1.9.5-py2.7.egg/collective/recipe/plonesite/plonesite.py", line 372, in <module>
    main(app, parser)  # NOQA
  File "/data/intranet/eggs/collective.recipe.plonesite-1.9.5-py2.7.egg/collective/recipe/plonesite/plonesite.py", line 253, in main
    profiles_initial, site_replace, default_language)
  File "/data/intranet/eggs/collective.recipe.plonesite-1.9.5-py2.7.egg/collective/recipe/plonesite/plonesite.py", line 117, in create
    form()
  File "/data/intranet/eggs/Products.CMFPlone-5.1.2.1-py2.7.egg/Products/CMFPlone/browser/admin.py", line 264, in __call__
    checkCSRF(self.request)
  File "/data/intranet/eggs/plone.protect-3.1.2-py2.7.egg/plone/protect/authenticator.py", line 118, in check
    raise Forbidden('Form authenticator is invalid.')
zExceptions.Forbidden: Form authenticator is invalid.