I want to start reinforcement learning but I have some error so I can't make any progress

I'm trying to start reinforcement learning in Window by using vscode but have some errors.

import gym
#from tqdm import tqdm
from gym.envs.registration import register
import msvcrt

class _Getch:
    def __call__(self):
        fd = sys.stdin.fileno()
        old_settings = termios.tcgetattr(fd)
        try:
            tty.setraw(sys.stdin.fileno())
            ch = sys.stdin.read(3)
        finally:
            termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
inkey = _Getch()
left = 0
down = 1
right = 2
up = 3

arrow_keys={'\x1b[A' : up,'\x1b[B' : down,'\x1b[C' : right,'\x1b[D' : left}



register(
    id='FrozenLake-v3',
    entry_point = 'gym.envs.toy_text : FrozenLakeEnv',
    kwargs={'map_name' : '4x4', 'is_slippery':False}
)
env = gym.make("FrozenLake-v3")
env.render()
while True:
    key = inkey()
    if key not in arrow_keys.keys():
        print("Game aborted!")
        break
    action = arrow_keys[key]
    state, reward, done, info = env.step(action)
    env.render()
    print("State: ", state, "Action: ", action, "Reward: ", reward, "Info: ", info)
    if done:
        print("Finished with reward", reward)
        break

I install gym and check gym library is in pip list.

ModuleNotFoundError: No module named 'gym.envs.toy_text '

How to solve this problem? I want to solve this problem and i can make any progress.