파이보DB 명령어 오류가 납니다..에러 메시지와 init.py는 아래에 기재하겠습니다.
파이보 게시판 만들기 기능을 다 구현해놓고 AWS에 물린 후에 회원가입이 안되서 DB 명령어를 실행시켜 봤더니 이런 일이 일어나네요

flask db migrate
->
INFO  [alembic.runtime.migration] Context impl SQLiteImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.

init.py

from flask import Flask
from flask_migrate import Migrate
from flask_sqlalchemy import SQLAlchemy
from sqlalchemy import MetaData
from flaskext.markdown import Markdown

import config

naming_convention = {
    "ix": 'ix_%(column_0_label)s',
    "uq": "uq_%(table_name)s_%(column_0_name)s",
    "ck": "ck_%(table_name)s_%(column_0_name)s",
    "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
    "pk": "pk_%(table_name)s"
}
db = SQLAlchemy(metadata=MetaData(naming_convention=naming_convention))
migrate = Migrate()


def create_app():
    app = Flask(__name__)
    app.config.from_object(config)
    # ORM
    db.init_app(app)
    if app.config['SQLALCHEMY_DATABASE_URI'].startswith("sqlite"):
        migrate.init_app(app, db, render_as_batch=True)
    else:
        migrate.init_app(app, db)
    from . import models

    # 블루프린트
    from .views import main_views, question_views, answer_views, auth_views
    app.register_blueprint(main_views.bp)
    app.register_blueprint(question_views.bp)
    app.register_blueprint(answer_views.bp)
    app.register_blueprint(auth_views.bp)

    # 필터
    from .filter import format_datetime
    app.jinja_env.filters['datetime'] = format_datetime

    # markdown
    Markdown(app, extensions=['nl2br', 'fenced_code'])
    return app