Fix dummy data

server/books/factories.py

@@ -5,7 +5,7 @@ import wagtail_factories
 from django.contrib.auth import get_user_model
 from factory import CREATE_STRATEGY
 from wagtail.core import blocks
-from wagtail.core.models import Page
+from wagtail.core.models import Page, Site
 from wagtail.core.rich_text import RichText
 
 from assignments.models import Assignment
@@ -77,6 +77,12 @@ class InstrumentFactory(BasePageFactory):
     class Meta:
         model = BasicKnowledge
 
+    @classmethod
+    def _create(cls, model_class, *args, **kwargs):
+        kwargs['parent'] = Site.objects.get(is_default_site=True).root_page
+        return super()._create(model_class, *args, **kwargs)
+
+
 
 class BasicKnowledgeBlockFactory(wagtail_factories.StructBlockFactory):
     description = factory.LazyAttribute(fake_paragraph)
@@ -166,8 +172,6 @@ class ContentBlockFactory(BasePageFactory):
                         module=module
                     )
                     kwargs['{}__{}__{}__{}'.format(stream_field_name, idx, block_type, 'assignment')] = assignment
-
-
                 else:
                     for jdx, field in enumerate(value):