So far I’m unable to load any asset with assetManager.loadAny using something different from the UUID
an example:
I copy the URL and then
[Scene] download failed: db://assets/LDtk/SunnyLand_by_Ansimuz-extended?_t=1682850608528, status: 0(error)
I can’t use dir, path, and UUID doesn’t work for folders 
AssetManager is meant for runtime usage, what you are trying to do is loading asset from editor path, which is not available for runtime APIs.
Either you can use loadDir if your path is a bundle, use its runtime path LDtk/SunnyLand_by_Ansimuz-extended
https://docs.cocos.com/creator/manual/en/asset/asset-manager.html#load-resources
Or you can use Editor.Message.request to send message to AssetDB, like the following
const result = await Editor.Message.request(‘asset-db’, ‘query-asset-info’, “db://assets/LDtk/SunnyLand_by_Ansimuz-extended”);
there are two messages could be useful
'query-asset-info': {
params: [
string, // uuid | url | path
],
result: AssetInfo | null,
},
'query-asset-meta': {
params: [
string,
],
result: IAssetMeta | null,
},
The corresponding result are
export interface AssetInfo {
// Asset name
name: string;
// Asset display name
displayName: string;
source: string;
path: string;
url: string;
// Absolute path
file: string;
uuid: string;
importer: string;
type: string;
isDirectory: boolean;
library: { [key: string]: string };
subAssets: { [key: string]: AssetInfo };
visible: boolean;
readonly: boolean;
instantiation?: string;
redirect?: IRedirectInfo;
extends?: string[];
imported: boolean;
invalid: boolean;
}
export interface IAssetMeta {
ver: string;
importer: string;
imported: boolean;
uuid: string;
files: string[];
subMetas: {
[index: string]: IAssetMeta;
};
userData: {
[index: string]: any;
};
displayName: string;
id: string;
name: string;
}
I guess your are working on a plugin, it’s probably useful to give you more information on editor side APIs
