Twig Error: Collection for Schema not found: treatments Check in Debugger

Treatments Admin Form | My Website
{% set stackspublish = false %}
{% set form = cms.form.builder("treatments", { save : "Save", delete : "Delete", helpStyle : "", helpOnHover : false, helpOnFocus : false, class : "custom-layout ", addOnly : false, register : false, useFormGrid : false, }) %} {% set formContent %} {{ form.field('id', { field : "id", icon : true, required : false, readonly : false, disabled : false, class : "", label : "Treatment", placeholder : "Placeholder", help : "", }) }} {{ form.field('title', { field : "text", icon : true, required : false, readonly : false, disabled : false, class : "", }) }} {{ form.field('categories', { field : "list", icon : true, required : false, readonly : false, disabled : false, class : "", label : "categories", placeholder : "Placeholder", help : "Add categories here", }) }} {{ form.field('date', { field : "date", icon : true, required : false, readonly : false, disabled : false, class : "", label : "Date added", placeholder : "Placeholder", help : "DD/MM/YY", }) }} {{ form.field('image', { field : "image", class : "", settings : { rules : { } }, }) }} {{ form.field('summary', { field : "styledtext", icon : true, required : false, readonly : false, disabled : false, class : "", }) }} {{ form.field('content', { field : "styledtext", icon : true, required : false, readonly : false, disabled : false, class : "", }) }} {{ form.field('media', { field : "text", icon : true, required : false, readonly : false, disabled : false, class : "", label : "Media", placeholder : "Placeholder", help : "A link to Youtube/Vimeo", }) }} {{ form.field('extra', { field : "styledtext", icon : true, required : false, readonly : false, disabled : false, class : "", label : "Extra Content", placeholder : "Placeholder", help : "Extra content area beneath the video", }) }} {{ form.field('featured', { field : "checkbox", icon : true, required : false, readonly : false, disabled : false, class : "mt:8", label : "Featured?", help : "Set to featured if you want this treatment to show on the Home page", }) }} {% endset %} {{ form.build(formContent) }}
{{ cms.assetsBody() }}