downgrade to kirby v3

kirby/config/api/models/File.php

@@ -57,9 +57,8 @@ return [
 		},
 		'type'       => fn (File $file) => $file->type(),
 		'url'        => fn (File $file) => $file->url(),
-		'uuid'       => fn (File $file) => $file->uuid()?->toString()
 	],
-	'type'  => File::class,
+	'type'  => 'Kirby\Cms\File',
 	'views' => [
 		'default' => [
 			'content',
@@ -80,8 +79,7 @@ return [
 			'size',
 			'template',
 			'type',
-			'url',
-			'uuid'
+			'url'
 		],
 		'compact' => [
 			'filename',
@@ -89,7 +87,6 @@ return [
 			'link',
 			'type',
 			'url',
-			'uuid'
 		],
 		'panel' => [
 			'blueprint',
@@ -112,8 +109,7 @@ return [
 			'prevWithTemplate' => 'compact',
 			'template',
 			'type',
-			'url',
-			'uuid'
+			'url'
 		]
 	],
 ];