hi! thanks for the answer.
i setup new joomla 3.8.2 + last seblod 3.15
the former mistake remained.
I have conducted one more experiment in which content of type has changed storage type.
And even in content type free of the field based on article addition leads to a mistake.
Though I think that it is a seblod error. What do you think about it?
But then to me it isn't clear at all how to use the free type?
And the question was divided:
1. content free type (I want to create independent type for the countries and the cities)
2. and the field storage:free (I want to create the system of multi tags and multicategories)