Adding Checkbox to django-tables2 - Key Error

Hi, Django noob here, am stuck and can not find an example to help me past my error. Using the tutorial (https://django-tables2.readthedocs.io/en/latest/pages/tutorial.html) have managed to display the table. Could now like to add a checkbox to each row, so the user can select multiple rows

django-payments how to create a instance and redirect

Hi, sorry real noob, I have started with Django and slowly understand the MVC, url.py, views.py, forms.py and models.py. Now I would like to add a button to one template page to redirect to a payment gateway. Would like to use django-payments And have followed installation: