{"record":{"id":"6d9382cbbcad5c17","repo":"bevyengine/bevy","slug":"failed-to-apply-the-related-relationship-type-nam","errorCode":null,"errorMessage":"Failed to apply the related {relationship_type_name} Scene at index {index}: {error}","messagePattern":"Failed to apply the related (.+?) Scene at index (.+?): (.+?)","errorType":"exception","errorClass":"ApplySceneError","httpStatus":null,"severity":"error","filePath":"crates/bevy_scene/src/resolved_scene.rs","lineNumber":640,"sourceCode":"    },\n    /// Caused when an cached scene is not present.\n    #[error(\"The cached scene (id: {id:?}, path: \\\"{path:?}\\\") does not exist.\")]\n    MissingCachedScene {\n        /// The path of the cached scene.\n        path: Option<AssetPath<'static>>,\n        /// The asset id of the cached scene.\n        id: AssetId<ScenePatch>,\n    },\n    /// Caused when an cached scene has not been resolved yet.\n    #[error(\"The cached scene (id: {id:?}, path: \\\"{path:?}\\\") has not been resolved yet.\")]\n    UnresolvedCachedScene {\n        /// The path of the cached scene.\n        path: Option<AssetPath<'static>>,\n        /// The asset id of the cached scene.\n        id: AssetId<ScenePatch>,\n    },\n    /// Caused when a related [`ResolvedScene`] fails to apply.\n    #[error(\n        \"Failed to apply the related {relationship_type_name} Scene at index {index}: {error}\"\n    )]\n    RelatedSceneError {\n        /// The type name of the relationship.\n        relationship_type_name: &'static str,\n        /// The index of the related scene that failed to apply.\n        index: usize,\n        /// The error that occurred when applying the related scene.\n        error: Box<ApplySceneError>,\n    },\n}\n\n/// A collection of [`ResolvedScene`]s that are related to a given [`ResolvedScene`] by a [`Relationship`].\n/// Each [`ResolvedScene`] added here will be spawned as a new [`Entity`] when the \"parent\" [`ResolvedScene`] is spawned.\npub struct RelatedResolvedScenes {\n    /// The related resolved scenes. Each entry in the list corresponds to a new related entity that will be spawned with the given scene.\n    pub scenes: Vec<ResolvedScene>,\n    /// The function that will be called to add the relationship to the spawned related scene.","sourceCodeStart":622,"sourceCodeEnd":658,"githubUrl":"https://github.com/bevyengine/bevy/blob/396ca727080776bd313bb892423b7d94e03b81b4/crates/bevy_scene/src/resolved_scene.rs#L622-L658","documentation":"Variant of ApplySceneError. A ResolvedScene holds related child scenes (via relationship targets such as Children); if one of those scenes fails to apply, the failure is wrapped as RelatedSceneError with the relationship type name, the index of the failing sub-scene, and the boxed inner error, so you can locate which child failed.","triggerScenarios":"Calling resolved.spawn/apply on a scene whose Children (or other relationship) list contains a sub-scene that itself fails to apply; the apply loop hits the failing index and wraps the error.","commonSituations":"Large nested BSN hierarchies where one deep child has a broken template or entity reference; relationship scenes loaded from assets that drifted out of sync with component definitions.","solutions":["Use the index and relationship_type_name fields to find the exact failing sub-scene in your scene definition","Inspect and fix the inner boxed ApplySceneError (often TemplateBuildError deep in the hierarchy)","Apply child scenes individually during development to bisect which one fails"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"match result {\n    Err(ApplySceneError::RelatedSceneError { relationship_type_name, index, error }) => {\n        error!(\"{relationship_type_name} scene #{index} failed: {error}\");\n    }\n    _ => {}\n}","preventionTips":["Keep BSN hierarchies shallow enough to bisect failures by applying sub-scenes individually","Use the reported index to map straight to the failing child in the scene source"],"tags":["bevy","scene","hierarchy","nested-error","spawn"],"backgroundTag":"scene-apply-failed","analyzedSha":"396ca727080776bd313bb892423b7d94e03b81b4","analyzedAt":"2026-08-20T16:12:39.808Z","contentChangedAt":"2026-08-20T16:12:39.808Z","schemaVersion":2},"datasetVersion":"2026-09-09T01:17:15.007Z"}