Running python run.py getting error

(mflix) Chandras-MBP:mflix-python chandradesam$ python run.py
Traceback (most recent call last):
File “run.py”, line 1, in
from mflix.factory import create_app
File “/Users/chandradesam/sujji/mflix-python/mflix/factory.py”, line 6, in
from flask_bcrypt import Bcrypt
ImportError: No module named ‘flask_bcrypt’

Please run pip install -r requirements.txt.

Kanika