Invalid filter: 'markdown'

[humoba]

I have an error 500 in the page to edit a recipe (https://example.appspot.com/recipe/edit/1/)

With the Debug on, i have this message: "Invalid filter: 'markdown'" in the file: starthinker_ui/templates/recipe/recipe_edit.html

This filter was recently added in the commit 8241426#diff-2805e9f9cd691f644b662e0206b277f27c98b4a9f6a4ad6079f2bfac1930c630