{"record":{"id":"30fc4ca1c1d1e346","repo":"BabylonJS/Babylon.js","slug":"no-scene-available-to-load-asset-container-to","errorCode":null,"errorMessage":"No scene available to load asset container to","messagePattern":"No scene available to load asset container to","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/dev/core/src/Loading/sceneLoader.ts","lineNumber":1151,"sourceCode":" * @param options an object that configures aspects of how the scene is loaded\r\n * @returns A promise that resolves when the scene is appended\r\n */\r\nexport async function appendSceneAsync(source: SceneSource, scene: Scene, options?: AppendOptions): Promise<void> {\r\n    return await AppendSceneAsync(source, scene, options);\r\n}\r\n\r\n// This is the core implementation of load asset container\r\nasync function loadAssetContainerCoreAsync(\r\n    rootUrl: string,\r\n    sceneFilename: SceneSource = \"\",\r\n    scene: Nullable<Scene> = EngineStore.LastCreatedScene,\r\n    onProgress?: Nullable<(event: ISceneLoaderProgressEvent) => void>,\r\n    pluginExtension?: Nullable<string>,\r\n    name = \"\",\r\n    pluginOptions: PluginOptions = {}\r\n): Promise<AssetContainer> {\r\n    if (!scene) {\r\n        throw new Error(\"No scene available to load asset container to\");\r\n    }\r\n\r\n    const fileInfo = GetFileInfo(rootUrl, sceneFilename);\r\n    if (!fileInfo) {\r\n        throw new Error(\"Cannot load file: a valid scene filename or root url was not provided.\");\r\n    }\r\n\r\n    const loadingToken = {};\r\n    scene.addPendingData(loadingToken);\r\n\r\n    const progressHandler = wrapProgress(onProgress);\r\n\r\n    try {\r\n        const { plugin, data } = await loadDataAsync(fileInfo, scene, progressHandler, pluginExtension ?? null, name, pluginOptions);\r\n\r\n        const asyncPlugin = toAsyncPlugin(plugin, fileInfo);\r\n        if (!asyncPlugin.loadAssetContainerAsync) {\r\n            throw createLoadError(fileInfo, loadAssetContainerNotSupportedMessage);\r","sourceCodeStart":1133,"sourceCodeEnd":1169,"githubUrl":"https://github.com/BabylonJS/Babylon.js/blob/0592b347b8a4ee0236089ea86a749cacfdb266d8/packages/dev/core/src/Loading/sceneLoader.ts#L1133-L1169","documentation":"loadAssetContainerAsync requires a target Scene to attach pending data and build the AssetContainer against. Passing null/undefined for the scene parameter causes this throw before any loading starts.","triggerScenarios":"Calling SceneLoader.LoadAssetContainerAsync(rootUrl, filename, null) or omitting the scene argument so it resolves to undefined.","commonSituations":"Creating the container before initializing the engine/scene; a scene variable is undefined because engine init hasn't resolved or an earlier createScene call failed silently.","solutions":["Create the engine and scene first, then pass the scene instance to LoadAssetContainerAsync","Await engine/scene initialization before starting asset loading","Guard the call: if (!scene) throw/log before invoking the loader"],"exampleFix":"// before\nconst container = await SceneLoader.LoadAssetContainerAsync(url, '', undefined);\n// after\nconst scene = new Scene(engine);\nconst container = await SceneLoader.LoadAssetContainerAsync(url, '', scene);","handlingStrategy":"validation","validationCode":"if (!scene) throw new Error('Scene must be created before loading asset containers');\nconst container = await SceneLoader.LoadAssetContainerAsync(rootUrl, filename, scene);","typeGuard":"const hasScene = (s: unknown): s is Scene => s instanceof Scene;","tryCatchPattern":"try {\n  container = await SceneLoader.LoadAssetContainerAsync(url, '', scene);\n} catch (e) {\n  if (e instanceof Error && e.message.includes('No scene available')) {\n    console.error('Scene was undefined when loading asset container');\n  } else throw e;\n}","preventionTips":["Await engine/scene initialization before any loading code runs","Keep scene creation and asset loading in the same init function to avoid ordering bugs","Enable strictNullChecks so undefined scene parameters are caught at compile time"],"tags":["loader","babylonjs","null-scene","asset-container"],"backgroundTag":"null-or-undefined-scene","analyzedSha":"0592b347b8a4ee0236089ea86a749cacfdb266d8","analyzedAt":"2026-08-30T15:11:20.442Z","schemaVersion":2},"datasetVersion":"2026-08-31T09:17:48.483Z"}