Out of bounds when slicing string for blogs

The blogs and videos shortcode is failing to compile because a blog post has no text content. The slicestr is going out of bounds. This is blocking deployments.

Error: Error building site: "/home/jenkins/agent/workspace/public_www.eclipse.org_MR-259/content/blogs-and-videos/_index.md:9:1": failed to render shortcode "pages/blogs-and-videos": failed to process shortcode: "/home/jenkins/agent/workspace/public_www.eclipse.org_MR-259/layouts/shortcodes/pages/blogs-and-videos.html:44:19": execute of template failed: template: shortcodes/pages/blogs-and-videos.html:44:19: executing "shortcodes/pages/blogs-and-videos.html" at <slicestr $description 0 500>: error calling slicestr: slice bounds out of range