Exception for crispy form tags

Question

I am receiving error while trying to use crispy form tags as below

Error during template redering

for tag {% crispy form form.helper %}

template html file is as below

{% load crispy_forms_tags %}
...
    {% crispy form form.helper %}
...

Forms.py contains something like this

from crispy_forms.helper import FormHelper
from crispy_forms.layout import Submit
import floppyforms as forms

class SampleForm(forms.Form):
      ...

Answer 1

Try without from.

{% crispy form helper %}

Answer 2

from crispy_forms.helper import FormHelper
from crispy_forms.layout import Submit

class ExampleForm(forms.Form):
    [...]
    def __init__(self, *args, **kwargs):
        super(ExampleForm, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.helper.form_id = 'id-exampleForm'
        self.helper.form_class = 'blueForms'
        self.helper.form_method = 'post'
        self.helper.form_action = 'submit_survey'

        self.helper.add_input(Submit('submit', 'Submit'))

And then:

{% load crispy_forms_tags %}
{% crispy example_form example_form.helper %}

This is from Crispy forms documentation