[Bug]: Card component examples are failing in the latest version of the design system within the Jinja environment.

[SriHV]

Describe the bug

All card component examples are failing with an internal server error in the Jinja environment using the latest design system version 70.0.11. The issue is caused by a missing else statement in the condition that checks params.image.placeholderURL

Expected behaviour / outcome

All card component examples should function in design-system-python-flask-demo as they do in the design system

List the steps necessary to reproduce the bug

Clone the design-system-python-flask-demo branch and checkout to the load-ds-templates-in-jinja branch.
Run make run which renders all the example components as displayed in the Design System at http://127.0.0.1:5000.
Navigate to the card component and see all the examples fail with internal server error

Additional context

How to fix this issue:
Replace line 5 : {% set placeholderSrcset = (params.image.placeholderURL if params.image.placeholderURL) + "/img/small/placeholder-card.png 1x, " + (params.image.placeholderURL if params.image.placeholderURL else "") + "/img/large/placeholder-card.png 2x" %}

with

{% set placeholderSrcset = (params.image.placeholderURL if params.image.placeholderURL else “”) + "/img/small/placeholder-card.png 1x, " + (params.image.placeholderURL if params.image.placeholderURL else "") + "/img/large/placeholder-card.png 2x" %}

What version of the ONS Design System are you using?

70.0.11

What device(s) are you using?

Desktop

What operating system(s) are you using?

macOS

What browser(s) are you using?

Chrome