Action space and observation space error!

[since-89]

I am facing following error while running train.py file. Would be glad if any assistance is provided.

Traceback (most recent call last):
File "train.py", line 200, in
main()
File "train.py", line 136, in main
state, rewards, dones = env.step(actions)
File "/Users/pravinsuryawanshi/Desktop/FJSP/fjsp-drl/.venv/lib/python3.8/site-packages/gym/wrappers/order_enforcing.py", line 37, in step
return self.env.step(action)
File "/Users/pravinsuryawanshi/Desktop/FJSP/fjsp-drl/.venv/lib/python3.8/site-packages/gym/wrappers/env_checker.py", line 37, in step
return env_step_passive_checker(self.env, action)
File "/Users/pravinsuryawanshi/Desktop/FJSP/fjsp-drl/.venv/lib/python3.8/site-packages/gym/utils/passive_env_checker.py", line 242, in env_step_passive_checker
raise error.Error(
gym.error.Error: Expected Env.step to return a four or five element tuple, actual number of elements returned: 3.