Traceback (most recent call last):
  File "/mnt/e2yun_addons/website_shop/controllers/vr.py", line 384, in vr_detail
    html = template.render(paras)
  File "/usr/lib/python3/dist-packages/jinja2/asyncsupport.py", line 76, in render
    return original_render(self, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 1008, in render
    return self.environment.handle_exception(exc_info, True)
  File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 780, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/lib/python3/dist-packages/jinja2/_compat.py", line 37, in reraise
    raise value.with_traceback(tb)
  File "/mnt/e2yun_addons/website_shop/views/vr-detail.html", line 73, in top-level template code
    {% if 'taocan' in vr_product.product_code %}
TypeError: argument of type 'bool' is not iterable