Laravel "Trying to access array offset on value of type null" error when trying to render markdown

I'm trying to show some changelog content on my Laravel page with this markdown plugin, but it always throws this error: Trying to access array offset on value of type null

@markdown($changelog->content)

The content is not null, all the content is there and it gets created and stored properly.

I found out about @isset but no matter how I use it, it still shows that error.

@isset($changelog->content)
  @markdown($changelog->content)
@endisset

Note: I'm using Laravel 5.8, this is an older project.

via Chebli Mohamed