Выдает ошибку при парсинге

#!/usr/bin/python3
 
from argparse import ArgumentParser
from sqlalchemy.engine import create_engine
from sqlalchemy.sql import text
from sqlalchemy.exc import IntegrityError
 
import os
import sys
import logging
 
logging.basicConfig(level=logging.INFO)
logging.getLogger(__name__)
 
DB_HOST = os.environ.get('CALLCENTER_DB_HOST', '127.0.0.1')
DB_USERNAME = os.environ.get('CALLCENTER_DB_USER', 'test')
DB_PASSWORD = os.environ.get('CALLCENTER_DB_PASSWORD', 'test')
DB_NAME = os.environ.get('CALLCENTER_DB_NAME', 'testdb')
DB_STRING = f"postgresql://{DB_USERNAME}:{DB_PASSWORD}@{DB_HOST}/{DB_NAME}"
 
engine = create_engine(DB_STRING, pool_pre_ping=True)
 
 
def is_user_exists(data: dict):
    with engine.connect() as conn:
        statement = text(
            "SELECT * FROM users WHERE (users.name = :username OR users.email = :email)")
        result = conn.execute(statement, data)
 
        if result.rowcount > 0:
            return True
    return False
 
 
def add_new_user(data: dict):
    ADD_USER_STATEMENTS = [
        text("""INSERT INTO users (name, email, password) VALUES (:username, :email, :password);"""),
        text("""INSERT INTO call_users (manager, user_id) VALUES ((:caller_id),(SELECT (id) FROM users WHERE users.name = :username))""")
    ]
 
    with engine.connect() as conn:
        for statement in ADD_USER_STATEMENTS:
            try:
                conn.execute(statement, data)
            except IntegrityError as error:
                continue
                #logging.error(f"USER WITH USERNAME: {data['username']} OR EMAIL {data['username']} ALREADY EXISTS!")
            except Exception as error:
                logging.critical(f"OOPS, SOMETHING WENT WRONG: {error}")
            else:
                logging.info(f"ADD NEW USER: {data['username']}")
 
 
def main(args):
    username = args.username
    password = args.password
    email = args.email
    caller_id = args.caller_id
 
    data = {'username': username, 'password': password,
            'email': email, 'caller_id': caller_id}
 
    # if is_user_exists(data):
    #     logging.warning(f"USER WITH USERNAME: {data['username']} OR EMAIL {data['username']} ALREADY EXISTS!")
    #     return 0
 
    add_new_user(data)
 
    return 0
 
 
if __name__ == "__main__":
    parser = ArgumentParser()
    parser.add_argument('-u', '--username',
                        help='Name for new user', required=True)
    parser.add_argument('-e', '--email', help='New user email', required=True)
    parser.add_argument('-p', '--password',
                        help='Password for new user', required=True)
    parser.add_argument('-c', '--caller-id',
                        help='Caller-ID for new user', required=True)
 
    sys.exit(main(parser.parse_args()))