502 Bad Gateway во время регистрации пользователя Django на ubuntu,ngnix

Я работаю над проектом django, представление регистрации работает довольно хорошо при разработке на моем localhost и тестовом сервере heruko. Но когда я переключаюсь на производство, используя Ubuntu и Ngnix, я получаю ошибку 502 bad gateway error всякий раз, когда пользователь пытается отправить форму регистрации. Другие формы, например, логин, работают отлично. Единственная проблема - это часть регистрации на производстве.

def registerView(request): form = UserCreationForm(request.POST или None)

>

if form.is_valid():
    user = form.save(commit=False)
   
    user.is_active = False
    # user.set_unusable_password()
    user.save()
    current_site = get_current_site(request)
    mail_subject = 'Activate your account.'
    email_var = {
        'user' : user,
        'domain': current_site.domain,
        'uid': urlsafe_base64_encode(force_bytes(user.pk)),
        'token': account_activation_token.make_token(user),

    }
    to_email = form.cleaned_data.get('email')
    from_email = settings.DEFAULT_FROM_EMAIL
    html_content = render_to_string('confirm_email.html',email_var)
    text_content = strip_tags(html_content)
    msg_html = render_to_string('confirm_email.html',email_var)
    send_mail(mail_subject,msg_html,from_email, [to_email],html_message=msg_html)

    return render(request,'email_redirect.html',{})
context = {
    'form':form,
}
return render(request,'register.html',context)

class ActivateAccount(View):

def get(self, request, uidb64, token, *args, **kwargs):
    try:
        uid = urlsafe_base64_decode(uidb64).decode()
        user = User.objects.get(pk=uid)

    except (TypeError, ValueError, OverflowError, User.DoesNotExist):
        user = None

    if user is not None and account_activation_token.check_token(user, token):
        user.is_active = True
        user.save()
        login(request, user)
        return render(request,'confirm_sucess.html',{})
    else:
        return render(request,'confirm_error.html',{})

forms.py

class UserCreationForm(forms.ModelForm): error_messages = { 'password_mismatch': ('Два поля пароля не совпали.'), } password1 = forms.CharField(label='Password', widget=forms.PasswordInput) password2 = forms.CharField(label='Подтверждение пароля', widget=forms.PasswordInput)

class Meta:
    model = User
    fields = ['firstname','email',]

def clean_password2(self):
    password1 = self.cleaned_data.get("password1")
    password2 = self.cleaned_data.get("password2")
    if password1 and password2 and password1 != password2:
        raise ValidationError(self.error_messages['password_mismatch'],code='password_mismatch',)
            
    return password2

def _post_clean(self):
    super()._post_clean()
    password = self.cleaned_data.get('password2')
    if password:
        try:
            password_validation.validate_password(password, self.instance)
        except ValidationError as error:
            self.add_error('password2', error)



def clean_email(self):
    email = self.cleaned_data.get('email')
    email_qs = User.objects.filter(email=email)
    if email_qs.exists():
        raise forms.ValidationError("user with that email already exists")
    return email

def clean_firstname(self):
    firstname = self.cleaned_data.get('firstname')
    name_qs = User.objects.filter(firstname=firstname)
    if name_qs.exists():
        raise forms.ValidationError("User with name alredy exists")
    return firstname

def save(self, commit=True):
    user = super(UserCreationForm, self).save(commit=False)
    user.set_password(self.cleaned_data['password1'])

    if commit:
        user.save()
    return user
        

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