Flask single page form with validation

I need a single page website in python 3.8.

It should implemented in flask, flask_wtf and flask_bootstrap.
https://pythonhosted.org/Flask-Bootstrap/basic-usage.html
https://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-iii-web-forms

Formular elemens
Name and Family Name - StringField
Street - StringField
City - StringField
ZIP code - StringField
Date of birth - DateField
Email address - EmailField
Telephone number - StringField
Select box with value1, value2, value3 - SelectField

All inputs are required. Check email for existence. e.g. validators.DataRequired(), validators.Email()

Endpoints needed to implement:
/index - showing formular and button to check
/check - check formular

Delivery:
zip archive with all code