# Buggy code
def create(self, name_or_url, **kwargs):
    # create url.URL object
    u = url.make_url(name_or_url)

    plugins = u._instantiate_plugins(kwargs)

    u.query.pop("plugin", None)
    kwargs.pop("plugins", None)

    entrypoint = u._get_entrypoint()
    dialect_cls = entrypoint.get_dialect_cls(u)

    if kwargs.pop("_coerce_config", False):

        def pop_kwarg(key, default=None):
            value = kwargs.pop(key, default)
            if key in dialect_cls.engine_config_types:
                value = dialect_cls.engine_config_types[key](value)
            return value

    else:
        pop_kwarg = kwargs.pop

    dialect_args = {}
    # consume dialect arguments from kwargs
    for k in util.get_cls_kwargs(dialect_cls):
        if k in kwargs:
            dialect_args[k] = pop_kwarg(k)

    dbapi = kwargs.pop("module", None)
    if dbapi is None:
        dbapi_args = {}
        for k in util.get_func_kwargs(dialect_cls.dbapi):
            if k in kwargs:
                dbapi_args[k] = pop_kwarg(k)
        dbapi = dialect_cls.dbapi(**dbapi_args)

    dialect_args["dbapi"] = dbapi

    for plugin in plugins:
        plugin.handle_dialect_kwargs(dialect_cls, dialect_args)

    # create dialect
    dialect = dialect_cls(**dialect_args)

    # assemble connection arguments
    (cargs, cparams) = dialect.create_connect_args(u)
    cparams.update(pop_kwarg("connect_args", {}))
    cargs = list(cargs)  # allow mutability

    # look for existing pool or create
    pool = pop_kwarg("pool", None)
    if pool is None:

        def connect(connection_record=None):
            if dialect._has_events:
                for fn in dialect.dispatch.do_connect:
                    connection = fn(dialect, connection_record, cargs, cparams)
                    if connection is not None:
                        return connection
            return dialect.connect(*cargs, **cparams)

        creator = pop_kwarg("creator", connect)

        poolclass = pop_kwarg("poolclass", None)
        if poolclass is None:
            poolclass = dialect_cls.get_pool_class(u)
        pool_args = {"dialect": dialect}

        # consume pool arguments from kwargs, translating a few of
        # the arguments
        translate = {
            "logging_name": "pool_logging_name",
            "echo": "echo_pool",
            "timeout": "pool_timeout",
            "recycle": "pool_recycle",
            "events": "pool_events",
            "use_threadlocal": "pool_threadlocal",
            "reset_on_return": "pool_reset_on_return",
            "pre_ping": "pool_pre_ping",
            "use_lifo": "pool_use_lifo",
        }
        for k in util.get_cls_kwargs(poolclass):
            tk = translate.get(k, k)
            if tk in kwargs:
                pool_args[k] = pop_kwarg(tk)

        for plugin in plugins:
            plugin.handle_pool_kwargs(poolclass, pool_args)

        pool = poolclass(creator, **pool_args)
    else:
        if isinstance(pool, poollib.dbapi_proxy._DBProxy):
            pool = pool.get_pool(*cargs, **cparams)
        else:
            pool = pool

        pool._dialect = dialect

    # create engine.
    engineclass = self.engine_cls
    engine_args = {}
    for k in util.get_cls_kwargs(engineclass):
        if k in kwargs:
            engine_args[k] = pop_kwarg(k)

    _initialize = kwargs.pop("_initialize", True)

    # all kwargs should be consumed
    if kwargs:
        raise TypeError(
            "Invalid argument(s) %s sent to create_engine(), "
            "using configuration %s/%s/%s.  Please check that the "
            "keyword arguments are appropriate for this combination "
            "of components."
            % (
                ",".join("'%s'" % k for k in kwargs),
                dialect.__class__.__name__,
                pool.__class__.__name__,
                engineclass.__name__,
            )
        )

    engine = engineclass(pool, dialect, u, **engine_args)

    if _initialize:
        do_on_connect = dialect.on_connect()
        if do_on_connect:

            def on_connect(dbapi_connection, connection_record):
                conn = getattr(dbapi_connection, "_sqla_unwrap", dbapi_connection)
                if conn is None:
                    return
                do_on_connect(conn)

            event.listen(pool, "first_connect", on_connect)
            event.listen(pool, "connect", on_connect)

        def first_connect(dbapi_connection, connection_record):
            c = base.Connection(engine, connection=dbapi_connection, _has_events=False)
            c._execution_options = util.immutabledict()
            dialect.initialize(c)
            dialect.do_rollback(c.connection)

        event.listen(pool, "first_connect", first_connect, once=True)

    dialect_cls.engine_created(engine)
    if entrypoint is not dialect_cls:
        entrypoint.engine_created(engine)

    for plugin in plugins:
        plugin.engine_created(engine)

    return engine


# Traceback (TypeError)
Traceback (most recent call last):
File "sandbox.py", line 54, in <module>
print(engine.execute(product.select().where(product.c.id == 709765476)).fetchall())
File "/Users/vm/ws/app/env/lib/python3.7/site-packages/sqlalchemy/engine/result.py", line 170, in __repr__
return repr(sql_util._repr_row(self))
File "/Users/vm/ws/app/env/lib/python3.7/site-packages/sqlalchemy/sql/util.py", line 458, in __repr__
", ".join(trunc(value) for value in self.row),
File "/Users/vm/ws/app/env/lib/python3.7/site-packages/sqlalchemy/sql/sqltypes.py", line 2278, in process
return json_deserializer(value)
File "/usr/local/Cellar/python/3.7.2_2/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/__init__.py", line 341, in loads
raise TypeError(f'the JSON object must be str, bytes or bytearray, '
TypeError: the JSON object must be str, bytes or bytearray, not dict

# Fixed code
def create(self, name_or_url, **kwargs):
    # create url.URL object
    u = url.make_url(name_or_url)

    plugins = u._instantiate_plugins(kwargs)

    u.query.pop("plugin", None)
    kwargs.pop("plugins", None)

    entrypoint = u._get_entrypoint()
    dialect_cls = entrypoint.get_dialect_cls(u)

    if kwargs.pop("_coerce_config", False):

        def pop_kwarg(key, default=None):
            value = kwargs.pop(key, default)
            if key in dialect_cls.engine_config_types:
                value = dialect_cls.engine_config_types[key](value)
            return value

    else:
        pop_kwarg = kwargs.pop

    dialect_args = {}
    # consume dialect arguments from kwargs
    for k in util.get_cls_kwargs(dialect_cls):
        if k in kwargs:
            dialect_args[k] = pop_kwarg(k)

    dbapi = kwargs.pop("module", None)
    if dbapi is None:
        dbapi_args = {}
        for k in util.get_func_kwargs(dialect_cls.dbapi):
            if k in kwargs:
                dbapi_args[k] = pop_kwarg(k)
        dbapi = dialect_cls.dbapi(**dbapi_args)

    dialect_args["dbapi"] = dbapi

    for plugin in plugins:
        plugin.handle_dialect_kwargs(dialect_cls, dialect_args)

    # create dialect
    dialect = dialect_cls(**dialect_args)

    # assemble connection arguments
    (cargs, cparams) = dialect.create_connect_args(u)
    cparams.update(pop_kwarg("connect_args", {}))
    cargs = list(cargs)  # allow mutability

    # look for existing pool or create
    pool = pop_kwarg("pool", None)
    if pool is None:

        def connect(connection_record=None):
            if dialect._has_events:
                for fn in dialect.dispatch.do_connect:
                    connection = fn(dialect, connection_record, cargs, cparams)
                    if connection is not None:
                        return connection
            return dialect.connect(*cargs, **cparams)

        creator = pop_kwarg("creator", connect)

        poolclass = pop_kwarg("poolclass", None)
        if poolclass is None:
            poolclass = dialect_cls.get_pool_class(u)
        pool_args = {"dialect": dialect}

        # consume pool arguments from kwargs, translating a few of
        # the arguments
        translate = {
            "logging_name": "pool_logging_name",
            "echo": "echo_pool",
            "timeout": "pool_timeout",
            "recycle": "pool_recycle",
            "events": "pool_events",
            "use_threadlocal": "pool_threadlocal",
            "reset_on_return": "pool_reset_on_return",
            "pre_ping": "pool_pre_ping",
            "use_lifo": "pool_use_lifo",
        }
        for k in util.get_cls_kwargs(poolclass):
            tk = translate.get(k, k)
            if tk in kwargs:
                pool_args[k] = pop_kwarg(tk)

        for plugin in plugins:
            plugin.handle_pool_kwargs(poolclass, pool_args)

        pool = poolclass(creator, **pool_args)
    else:
        if isinstance(pool, poollib.dbapi_proxy._DBProxy):
            pool = pool.get_pool(*cargs, **cparams)
        else:
            pool = pool

        pool._dialect = dialect

    # create engine.
    engineclass = self.engine_cls
    engine_args = {}
    for k in util.get_cls_kwargs(engineclass):
        if k in kwargs:
            engine_args[k] = pop_kwarg(k)

    _initialize = kwargs.pop("_initialize", True)

    # all kwargs should be consumed
    if kwargs:
        raise TypeError(
            "Invalid argument(s) %s sent to create_engine(), "
            "using configuration %s/%s/%s.  Please check that the "
            "keyword arguments are appropriate for this combination "
            "of components."
            % (
                ",".join("'%s'" % k for k in kwargs),
                dialect.__class__.__name__,
                pool.__class__.__name__,
                engineclass.__name__,
            )
        )

    engine = engineclass(pool, dialect, u, **engine_args)

    if _initialize:
        do_on_connect = dialect.on_connect()
        if do_on_connect:

            def on_connect(dbapi_connection, connection_record):
                conn = getattr(dbapi_connection, "_sqla_unwrap", dbapi_connection)
                if conn is None:
                    return
                do_on_connect(conn)

            event.listen(pool, "first_connect", on_connect)
            event.listen(pool, "connect", on_connect)

        def first_connect(dbapi_connection, connection_record):
            c = base.Connection(engine, connection=dbapi_connection, _has_events=False)
            c._execution_options = util.immutabledict()
            dialect.initialize(c)
            dialect.do_rollback(c.connection)

        event.listen(
            pool,
            "first_connect",
            first_connect,
            _once_unless_exception=True,
        )

    dialect_cls.engine_created(engine)
    if entrypoint is not dialect_cls:
        entrypoint.engine_created(engine)

    for plugin in plugins:
        plugin.engine_created(engine)

    return engine