Liquid Exception: Invalid scheme format: {"feature"=>"abstract-10.jpg", "credit"=>"dargadgetz", "creditlink"=>"http in feed.xml

[AFAgarap]

I'm using jekyll 3.5.2, and it gives the following error when I'm running bundle exec jekyll build --watch:

Configuration file: /home/darth/GitHub Projects/AFAgarap.github.io/_config.yml
            Source: /home/darth/GitHub Projects/AFAgarap.github.io
       Destination: /home/darth/GitHub Projects/AFAgarap.github.io/_site
 Incremental build: disabled. Enable with --incremental
      Generating... 
  Liquid Exception: Invalid scheme format: {"feature"=>"abstract-10.jpg", "credit"=>"dargadgetz", "creditlink"=>"http in feed.xml
jekyll 3.5.2 | Error:  Invalid scheme format: {"feature"=>"abstract-10.jpg", "credit"=>"dargadgetz", "creditlink"=>"http

My repository may be found here.

[mmistakes]

See this thread for suggestions
mmistakes/so-simple-theme#250

This appears to be an issue with the jekyll-feed plugin not the theme as indicated by the error message.

[mmistakes]

Filed an upstream issue jekyll/jekyll-feed#191