数据库发生错误。

{
	"$schema": "https://schemas.wp.org/trunk/block.json",
	"apiVersion": 3,
	"name": "core/footnotes",
	"title": "Footnotes",
	"category": "text",
	"description": "Display footnotes added to the page.",
	"keywords": [ "references" ],
	"textdomain": "default",
	"usesContext": [ "postId", "postType" ],
	"supports": {
		"__experimentalBorder": {
			"radius": true,
			"color": true,
			"width": true,
			"style": true,
			"__experimentalDefaultControls": {
				"radius": false,
				"color": false,
				"width": false,
				"style": false
			}
		},
		"color": {
			"background": true,
			"link": true,
			"text": true,
			"__experimentalDefaultControls": {
				"link": true,
				"text": true
			}
		},
		"html": false,
		"multiple": false,
		"reusable": false,
		"inserter": false,
		"spacing": {
			"margin": true,
			"padding": true,
			"__experimentalDefaultControls": {
				"margin": false,
				"padding": false
			}
		},
		"typography": {
			"fontSize": true,
			"lineHeight": true,
			"__experimentalFontFamily": true,
			"__experimentalTextDecoration": true,
			"__experimentalFontStyle": true,
			"__experimentalFontWeight": true,
			"__experimentalLetterSpacing": true,
			"__experimentalTextTransform": true,
			"__experimentalWritingMode": true,
			"__experimentalDefaultControls": {
				"fontSize": true
			}
		},
		"interactivity": {
			"clientNavigation": true
		}
	},
	"style": "wp-block-footnotes"
}