from flask import Flask

from routes.main import main

import os

app = Flask(__name__, 

            static_folder='app/static',  

            template_folder='app/templates')

# app = Flask(__name__, template_folder=os.path.abspath('app/templates'))

# ... rest of your code ...

app.register_blueprint(main)

if __name__ == '__main__':

    app.run(debug=True)