ERR : NO MODULE NAMED 'flask'

[HavyasRai]

whenever I am trying to run the command 'python3 app.py' it shows the following error..

Traceback (most recent call last):
File "C:\Users\havya\OneDrive\Desktop\jiosaavan\jioSaavnAPI\app.py", line 1, in
from flask import Flask, request, redirect, jsonify, json
ModuleNotFoundError: No module named 'flask'

Even i have python flask installed
Can you please give me a sollution for this issue