Pathologic was missing because of a .git folder inside.

[yaffs-website] / web / modules / contrib / layout_plugin / modules / layout_plugin_example / layout_plugin_example.layouts.yml

layout_example_1col:
  label: 1 Column Layout
  category: Examples
  template: templates/layout-example-1col
  css: css/layout-example-1col.css
  regions:
    top:
      label: Top region
    bottom:
      label: Bottom region

layout_example_2col:
  label: 2 Column layout
  category: Examples
  template: templates/layout-example-2col
  css: css/layout-example-2col.css
  regions:
    left:
      label: Left region
    right:
      label: Right region