Swiss Food Box Design Error: 'customer' is undefined

Triggered by: loyalty_store_copy.html (line 369)

  367.   			<div class="row">
  368. 			<section class="card col-xs-10 col-xs-offset-1 hidden-sm hidden-md hidden-lg">
> 369. 				<a href="{{ }}&mail={{ }}">
  370. 					<div style="background-image: url('//');" class="img-container"></div>
  371. 				</a>

Stack Trace:

Traceback (most recent call last):
  File "/src/cratejoy/cratejoy/theme/", line 405, in render_page
    output = tpl.render(**kwargs)
  File "/usr/local/lib/python2.7/site-packages/jinja2/", line 1008, in render
    return self.environment.handle_exception(exc_info, True)
  File "/usr/local/lib/python2.7/site-packages/jinja2/", line 780, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "loyalty_store_copy.html", line 2, in top-level template code
  File "base.html", line 148, in top-level template code
  File "loyalty_store_copy.html", line 369, in block "page_content"
  File "/usr/local/lib/python2.7/site-packages/jinja2/", line 385, in getattr
    value = getattr(obj, attribute)
UndefinedError: 'customer' is undefined

PSST: If you are the owner of this store, fix this error from the code editor. See the developer documentation for more information.