Unable to create OKR Blueprint

[nabidi]

I am new to Confluence and trying to create first OKR blue print, but get this error. 

We can't create that blueprint right now.

Error occurred when updating content property editor. Cannot create new content property, see https://docs.atlassian.com/confluence/REST/latest/#content/{id}/property-create for usage. Property : JsonContentProperty{id='null', key='editor', content=ExpandedReference{idProperties={status=draft, id=ContentId{id=22052865}, version=EmptyReference{referentClass=class com.atlassian.confluence.api.model.content.Version}}, of=some(Content{id='ContentId{id=22052865}', type=page, title='', status=draft, space=ExpandedReference{idProperties={key=CPDT}, of=some(Space{key='CPDT', name='null'})}, history=EmptyReference{referentClass=class com.atlassian.confluence.api.model.content.History}, version=EmptyReference{referentClass=class com.atlassian.confluence.api.model.content.Version}, ancestors=null (CollapsedList), container=EmptyReference{referentClass=interface com.atlassian.confluence.api.model.content.Container}, childTypes={}})}, version=null}