fix: account check in runtime (#569)

api/app.py

 import os
 from datetime import datetime
 
+from werkzeug.exceptions import Forbidden
+
 if not os.environ.get("DEBUG") or os.environ.get("DEBUG").lower() != 'true':
     from gevent import monkey
     monkey.patch_all()
 import core
 from config import Config, CloudEditionConfig
 from commands import register_commands
-from models.account import TenantAccountJoin
+from models.account import TenantAccountJoin, AccountStatus
 from models.model import Account, EndUser, App
 
 import warnings
         account = db.session.query(Account).filter(Account.id == account_id).first()
 
         if account:
+            if account.status == AccountStatus.BANNED.value or account.status == AccountStatus.CLOSED.value:
+                raise Forbidden('Account is banned or closed.')
+
             workspace_id = session.get('workspace_id')
             if workspace_id:
                 tenant_account_join = db.session.query(TenantAccountJoin).filter(