Problem when using with nunjucks-markdown

[Carlos Araya]

I'm trying to use this plugin together with Markdown-it, Graymatter. and nunjucks-markdown. For some reason the renderer is not recognizing the {% markdown %} tag.

The error I'm getting:

[08:03:43] Template render error in plugin "gulp-nunjucks"
Message:
    (unknown path) [Line 3, Column 4]
  unknown block tag: markdown
Details:
    fileName: /Users/carlos/code/static-gen-njk/src/pages/css-containment.md
    domainEmitter: [object Object]
    domainThrown: false

Are there examples of using the plugin with markdown parsers other than Marked? How do you fix this issue?