Django , upload multiple images with formset's - django

Question

I've been trying for days to understand the reason for my error, in the first phase I detected that it was missing {{ formset.management_form }} in the html, which i include and still continues to give the same error:
"ManagementForm data is missing or has been tampered with"
And I don't know if my views are the way they should be done.
Models
class Intervencao(models.Model):
........
class Imagem(models.Model):
intervencao = models.ForeignKey(Intervencao, related_name='intervencaoObjectsImagem', on_delete=models.CASCADE)
imagem = models.ImageField(upload_to=get_image, blank=True, null=True, verbose_name="Fotografia")
def __str__(self, ):
return str(self.intervencao)
<!-- e
Forms
class TabletForm2(forms.ModelForm):
class Meta:
model=Intervencao
fields = __all__
class TabletFormImagem(forms.ModelForm):
imagem = forms.ImageField(required=True)
class Meta:
model=Imagem
fields = ['imagem',]
Views
def project_detail_chefe(request, pk):
ImagemFormSet = modelformset_factory(Imagem,form=TabletFormImagem, extra=3)
instance = Intervencao.objects.get(id=pk)
d1 = datetime.now()
intervencaoForm = TabletForm2(request.POST or None, instance=instance)
formset = ImagemFormSet(request.POST, request.FILES,queryset=Imagem.objects.none())
if request.method == "POST":
if intervencaoForm.is_valid() and formset.is_valid():
instance_form1 = intervencaoForm.save(commit=False)
instance_form1.data_intervencao_fim = d1
instance_form1.save()
images = formset.save(commit=False)
for image in images:
image.intervencao = instance_form1
image.save()
return redirect('index')
else:
intervencaoForm = TabletForm2(request.POST)
formset = ImagemFormSet(queryset=Imagem.objects.none())
context = {
'intervencaoForm':intervencaoForm,
'formset':formset,
}
return render(request, 'tablet/info_chefes.html', context)
HTML
<form method="post" enctype="multipart/form-data" id="gravar">
<div class="row">
<div class="col-md-12">
<table>
{{ formset.management_form }}
{% for form in formset %}
{{ form }}
{% endfor %}
</table>
</div>
</div>
</form>

Answer 1

in my case , the problem was the
else:
intervencaoForm = TabletForm2(request.POST)
formset = ImagemFormSet(queryset=Imagem.objects.none())
beacause is in line with the wrong if. all working now