AWS에 개발한 내용을 업로드 후에
DB에 문제가 있어서 초기화 이후에
123p에서 배운대로 테스트 데이터 300개를 추가 하려고 하는데
아래 for문 실행시 문제가 발생합니다.
혹시 이유와 대응 방법을 알 수 있을까요?

>>> from pybo import db
>>> from pybo.models import Question
>>> from datetime import datetime
>>> for i in range(300):
...    q = Question(subject='테스트 데이터입니다:[%03d]' % i, content='내용무', create_dat
e=datetime.now())
...    db.session.add(q)
... 
Traceback (most recent call last):
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/sqlalchemy/util/_collecti
ons.py", line 1008, in __call__
    return self.registry[key]
KeyError: <greenlet.greenlet object at 0x7fce0241dd50 (otid=0x7fce03386040) current active
 started main>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 3, in <module>
  File "<string>", line 2, in add
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/sqlalchemy/orm/scoping.py
", line 24, in _proxied
    return self.registry()
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/sqlalchemy/util/_collecti
ons.py", line 1010, in __call__
    return self.registry.setdefault(key, self.createfunc())
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/sqlalchemy/orm/session.py
", line 4205, in __call__
    return self.class_(**local_kw)
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/flask_sqlalchemy/__init__
.py", line 174, in __init__
    self.app = app = db.get_app()
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/flask_sqlalchemy/__init__
.py", line 1042, in get_app
    raise RuntimeError(
RuntimeError: No application found. Either work inside a view function or push an applicat
ion context. See http://flask-sqlalchemy.pocoo.org/contexts/.
>>> db.session.commit()
Traceback (most recent call last):
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/sqlalchemy/util/_collecti
ons.py", line 1008, in __call__
    return self.registry[key]
KeyError: <greenlet.greenlet object at 0x7fce0241dd50 (otid=0x7fce03386040) current active
 started main>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 2, in commit
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/sqlalchemy/orm/scoping.py
", line 24, in _proxied
    return self.registry()
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/sqlalchemy/util/_collecti
ons.py", line 1010, in __call__
    return self.registry.setdefault(key, self.createfunc())
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/sqlalchemy/orm/session.py
", line 4205, in __call__
    return self.class_(**local_kw)
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/flask_sqlalchemy/__init__
.py", line 174, in __init__
    self.app = app = db.get_app()
  File "/home/ubuntu/venvs/myproject/lib/python3.8/site-packages/flask_sqlalchemy/__init__
.py", line 1042, in get_app
    raise RuntimeError(
RuntimeError: No application found. Either work inside a view function or push an applicat
ion context. See http://flask-sqlalchemy.pocoo.org/contexts/.