I am not familiar with Ruby. However, the image displaying how to fork the GitHub repository seems broken.
Problem:
The problem seems to be in the file: _github.html.erb
The image URL is trowing a Bad signal error.
https://camo.githubusercontent.com/365986a132ccd6a44c23a9169022c0b5c890c387/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f7265645f6161303030302e706e67
Solution
You could probably use the Raw image you already have in your project (github_icon.png). Here is the url using githubusercontent.
URL: https://raw.githubusercontent.com/MrPowers/code_quizzer/master/app/assets/images/github_icon.png
I am not familiar with Ruby. However, the image displaying how to fork the GitHub repository seems broken.
Problem:
The problem seems to be in the file:
_github.html.erbThe image URL is trowing a Bad signal error.
https://camo.githubusercontent.com/365986a132ccd6a44c23a9169022c0b5c890c387/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f7265645f6161303030302e706e67
Solution
You could probably use the Raw image you already have in your project (github_icon.png). Here is the url using githubusercontent.
URL:
https://raw.githubusercontent.com/MrPowers/code_quizzer/master/app/assets/images/github_icon.png