SQLAlchemy error: Could not parse SQLAlchemy URL from string

I can't connect to my database with SQLAlchemy. It throws an error that says:

E   sqlalchemy.exc.ArgumentError: Could not parse SQLAlchemy URL from string 'E   postgresql://[my_username]:[my_password]@localhost:5432/tugas1-law-db"

Here's my database.py implementation on FastAPI, which closely follows the FastAPI official guide:

from sqlalchemy import create_enginefrom sqlalchemy.orm import sessionmaker, declarative_baseimport osfrom dotenv import load_dotenvload_dotenv()# SQLALCHEMY_DATABASE_URL = "sqlite:///./sql_app.db"SQLALCHEMY_DATABASE_URL = f"""postgresql://[my_username]:{os.environ["POSTGRES_PASSWORD"]}@localhost:5432/tugas1-law-db""""engine = create_engine(    SQLALCHEMY_DATABASE_URL)SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)Base = declarative_base()def get_db():    db = SessionLocal()    try:        yield db    finally:        db.close()

And here's the full error stack:

ImportError while loading conftest '/home/[my_username]/notebin/test/conftest.py'.test/conftest.py:16: in <module>    from database import Base, get_dbdatabase.py:14: in <module>    engine = create_engine(env/lib/python3.10/site-packages/sqlalchemy/util/deprecations.py:281: in warned    return fn(*args, **kwargs)  # type: ignore[no-any-return]env/lib/python3.10/site-packages/sqlalchemy/engine/create.py:546: in create_engine    u = _url.make_url(url)env/lib/python3.10/site-packages/sqlalchemy/engine/url.py:842: in make_url    return _parse_url(name_or_url)env/lib/python3.10/site-packages/sqlalchemy/engine/url.py:908: in _parse_url    raise exc.ArgumentError(E   sqlalchemy.exc.ArgumentError: Could not parse SQLAlchemy URL from string 'E   postgresql://[my_username]:[my_password]@localhost:5432/tugas1-law-db"E   '

I'm currently on WSL Ubuntu, if that helps. I've checked that postgresql service is running and it is, I've checked that the credentials are correct and I can login to postgres through the terminal with no problem, I've checked that the database "tugas1-law-db" exists. I've also tried changing my SQLAlchemy URL to an online database, but that also fails for some reason. I've checked that the syntax of the url is correct, and actually when I run my project in a Windows device it has no problem running.