Unable to edit polygon in django form

[OpenDataAlex]

I've successfully installed django-leaflet into my app and can view/edit my polygon fields from the admin panel. I've been able to view but not edit the polygons in a normal django form.

My model:

class Location(models.Model):

    class Meta:
        db_table = "location"
        ordering = ['name']

    id = models.UUIDField(db_column="location_id", primary_key=True, default=uuid.uuid4, editable=False)
    name = models.CharField(db_column="location_name", null=False, max_length=750)
    drawn_area = models.PolygonField(db_column="location_drawn_area", null=False, srid=4326)

My form:

class LocationForm(forms.ModelForm):
    class Meta:
        model = Location
        fields = ['name', 'drawn_area']
        labels = {
            'name': 'Location Name',
            'drawn_area': 'Drawn Area'
        }
        widgets = {
            'drawn_area': LeafletWidget()
        }

When I click the edit layers button, I end up with:

https://imgur.com/a/VmKRhrq

I'm not sure what I'm doing wrong, or it's a bug, or something in between.