Django Model ORM Error

Error : django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

출처 : Django upgrading to 1.9 error "AppRegistryNotReady: Apps aren't loaded yet."

Error : QuerySet indices must be integers or slices, not str.

https://www.codeit.kr/tutorials/3/python-typeerror-list-indices-integers-slices

TypeError: Object of type TbhUserPrvtInf is not JSON serializable

not json serializable 오류 해결 방법