"no module named 'dotenv'" in when trying to set up autogpt

Question

When im trying to set up auto gpt like this:

PS C:\Users\******\Downloads\Auto-GPT-master> python3 c:\Users\******\Downloads\Auto-GPT-master\Auto-GPT-master\main.py

This error appears:

Traceback (most recent call last):
  File "c:\Users\******\Downloads\Auto-GPT-master\Auto-GPT-master\main.py", line 1, in <module>
    from autogpt import main
  File "c:\Users\******\Downloads\Auto-GPT-master\Auto-GPT-master\autogpt\__init__.py", line 5, in <module>       
    from dotenv import load_dotenv
ModuleNotFoundError: No module named 'dotenv'

How to solve it?