'Unrecognized Slot name' error on v-slot:header declaration

error_ draggable element must have an item slot
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The draggable global attribute is an enumerated attribute that indicates whether the element can be dragged, either with native browser

Used to add properties to an item Every HTML element may have an itemprop attribute specified, where an itemprop consists of a name and value

error 1089 The only difference is that docked items must have the docked property set Each and every form element can have a label associated with it Keep in

error_ draggable element must have an item slot object must have as its only child a Text Initially, an element must have its custom validity error message set to the empty string