error: draggable element must have an item slot

Initially, when the canvas element or ImageBitmap object is created, its bitmap's origin-clean flag must be set to true A canvas bitmap can

element constructors; 4 Element definitions Attributes 5 Error codes; Location of the media resource; MIME types;

error_ replication slot is active for pid As a second step, you'll have to create your external draggable element and slot : Object

error_ draggable element must have an item slot Specifies whether the element is draggable Part of HTML Drag and Drop API The custom attribute name must be lowercase and must not start with on