"e is null" error

[janherman]

Hello!

I use Kirby Builder and Kirby Markdown field in my project and I get an error "e is null". After some experimenting I realized the error message is caused by setting headlines option in Kirby Markdown field. The error appears only if the markdown field is inside builder block, that is why I think the issue is related to Kirby Builder.

Similar issue was posted in Kirby Markdown field repo a few days ago:
fabianmichael/kirby-markdown-field#70 (comment)

The headlines are written in the page blueprint like this:

buttons:
  - headlines
    - h2
    - h3

I have the latest version of these plugins as well as the latest version of Kirby (3.1).

[janherman]

EDIT: I updated Kirby to 3.1.4 and the error code disappeared, everything seems to work fine.