Problem with Github pages building my Jekyll site

Hello,

Github pages fails my new Jekyll website. I’m lost as in what to do next, as it runs fine locally and I’m not using any plugin besides the jekyll-seo-tag, which is supported.

I would really appreciate if somebody would fork my site and help me out.

UPDATE: I had to add jekyll-seo-tag to _configs.yml like this:

gems:
  - jekyll-seo-tag

Houman

To fork your site we need the link.