Unable to build the theme

[cbadhrinath]

After cloning the theme, on executing hugo server -t pure, I am getting the following error :

Building sites … WARN 2020/08/08 01:38:08 Markup type mmark is deprecated and will be removed in a future release. See https://gohugo.io//content-management/formats/#list-of-content-formats Built in 502 ms Error: Error building site: failed to render pages: render of "page" failed: execute of template failed: template: _default/single.html:12:7: executing "_default/single.html" at <partial "head.html" .>: error calling partial: execute of template failed: template: _internal/opengraph.html:41:17: executing "_internal/opengraph.html" at <index $siteSeries $name>: error calling index: index of untyped nil