Flask не обрабатывает нажатие на кнопку

Внезапно перестало обрабатываться нажатие на кнопку, раньше работало(

   if form.validate_on_submit():#вот это условие не обрабатывается

Вот код

from app import app, db
from flask import render_template, redirect, url_for
from doc_template import gen_temp
from app.forms import QuizForm
from app.models import Protocol


@app.route('/')
@app.route('/index')

def index():
    return 'Hello, World'

@app.route('/quiz', methods=['GET', 'POST'])
def quiz():
    form = QuizForm()
    print('1')
    if form.validate_on_submit():
        print('2')
        gen = [
            form.protocol_n.data,
            form.date.data,
            form.specification_n.data,
            form.contract_n.data,
            form.equipment_owner.data,
            form.to_cusmoer.data,
            form.air_temp.data,
            form.wetness.data,
            form.atm_pressure.data,
            form.lightness.data,
            form.lab_lead.data
        ]

        protocol = Protocol(protocol_n=gen[0], date=gen[1], specification_n=gen[2], contract_n=gen[3], equipment_owner=gen[4], to_cusmoer=gen[5], air_temp=gen[6], wetness=gen[7], atm_pressure=gen[8], lightness=gen[9], lab_lead=gen[10])

        db.session.add(protocol)
        db.session.commit()

        print('generated')
        print(form.protocol_n.data)
        #return True, redirect(url_for('index'))
    print('3')
    return render_template('quiz.html', form=form)