* 겪고 있는 문제 상황을 최대한 자세하게 작성해주세요.

* 문제 해결을 위해 어떤 시도를 해보았는지 구체적으로 함께 알려주세요.

아까는 잘 썼는데 다시 certifi 오류 뜹니다.

from flask import Flask, render_template, request, jsonify
app = Flask(__name__)

from pymongo import MongoClient
import certifi

ca = certifi.where()

client = MongoClient('mongodb+srv://juli7748:Wngml9348.@cluster0.eana2qt.mongodb.net/Cluster0?retryWrites=true&w=majority', tlsCAFile = ca)
db = client.dbsparta


@app.route('/')
def home():
    return render_template('index.html')

@app.route("/homework", methods=["POST"])
def homework_post():
    name_receive = request.form['name_give']
    comment_receive = request.form['comment_give']

    doc = {
        'name': name_receive,
        'comment': comment_receive
    }

    db.homework.insert_one(doc)

    return jsonify({'msg':'응원 완료!'})

@app.route("/homework", methods=["GET"])
def homework_get():
    return jsonify({'msg':'GET 연결 완료!'})

if __name__ == '__main__':
    app.run('0.0.0.0', port=5002, debug=True)

/Users/jooheekang/Desktop/Sparta/homework/bin/python /Users/jooheekang/Desktop/Sparta/projects/homework/app.py 

Traceback (most recent call last):

 File "/Users/jooheekang/Desktop/Sparta/projects/homework/app.py", line 5, in <module>

  import certifi

ModuleNotFoundError: No module named 'certifi'

종료 코드 1(으)로 완료된 프로세스