No module named 'gym_duckietown'

[RFatkieva]

To run the command
python3 ./manual_control.py —env-name Duckietown-udem1-v0
Traceback (most recent call last):
File "/home/teamtim/gym-duckietown/./manual_control.py", line 17, in
from gym_duckietown.envs import DuckietownEnv
ModuleNotFoundError: No module named 'gym_duckietown'
Help please