{"record":{"id":"7dad7ee8617ce43d","repo":"bevyengine/bevy","slug":"0-n-n-if-you-were-attempting-to-apply-a-comma","errorCode":null,"errorMessage":"{0}\\n\\n    If you were attempting to apply a command to this entity,\\n    and want to handle this error gracefully, consider using `EntityCommands::queue_handled` or `queue_silenced`.","messagePattern":"(.+?)\\\\n\\\\n    If you were attempting to apply a command to this entity,\\\\n    and want to handle this error gracefully, consider using `EntityCommands::queue_handled` or `queue_silenced`\\.","errorType":"exception","errorClass":"EntityMutableFetchError::NotSpawned","httpStatus":null,"severity":"error","filePath":"crates/bevy_ecs/src/world/error.rs","lineNumber":53,"sourceCode":"#[error(\"Could not despawn entity: {0}\")]\npub struct EntityDespawnError(#[from] pub EntityNotSpawnedError);\n\n/// An error that occurs when dynamically retrieving components from an entity.\n#[derive(thiserror::Error, Debug, Clone, Copy, PartialEq, Eq)]\npub enum EntityComponentError {\n    /// The component with the given [`ComponentId`] does not exist on the entity.\n    #[error(\"The component with ID {0:?} does not exist on the entity.\")]\n    MissingComponent(ComponentId),\n    /// The component with the given [`ComponentId`] was requested mutably more than once.\n    #[error(\"The component with ID {0:?} was requested mutably more than once.\")]\n    AliasedMutability(ComponentId),\n}\n\n/// An error that occurs when fetching entities mutably from a world.\n#[derive(thiserror::Error, Debug, Clone, Copy, PartialEq, Eq)]\npub enum EntityMutableFetchError {\n    /// The entity is not spawned.\n    #[error(\n        \"{0}\\n\n    If you were attempting to apply a command to this entity,\n    and want to handle this error gracefully, consider using `EntityCommands::queue_handled` or `queue_silenced`.\"\n    )]\n    NotSpawned(#[from] EntityNotSpawnedError),\n    /// The entity with the given ID was requested mutably more than once.\n    #[error(\"The entity with ID {0} was requested mutably more than once\")]\n    AliasedMutability(Entity),\n}\n\n/// An error that occurs when getting a resource of a given type in a world.\n#[derive(thiserror::Error, Debug, Clone, Copy, PartialEq, Eq)]\npub enum ResourceFetchError {\n    /// The resource has never been initialized or registered with the world.\n    #[error(\"The resource has never been initialized or registered with the world. Did you forget to add it using `app.insert_resource` / `app.init_resource`?\")]\n    NotRegistered,\n    /// The resource with the given [`ComponentId`] does not currently exist in the world.\n    #[error(\"The resource with ID {0:?} does not currently exist in the world.\")]","sourceCodeStart":35,"sourceCodeEnd":71,"githubUrl":"https://github.com/bevyengine/bevy/blob/396ca727080776bd313bb892423b7d94e03b81b4/crates/bevy_ecs/src/world/error.rs#L35-L71","documentation":"Error \"{0}\\n\\n    If you were attempting to apply a command to this entity,\\n    and want to handle this error gracefully, consider using `EntityCommands::queue_handled` or `queue_silenced`.\" thrown in bevyengine/bevy.","triggerScenarios":"Thrown at crates/bevy_ecs/src/world/error.rs:53 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Check the entity is spawned (world.get_entity) before queueing the command","Use EntityCommands::queue_handled to receive the error instead of panicking","Use queue_silenced when the entity being gone is an acceptable outcome"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"396ca727080776bd313bb892423b7d94e03b81b4","analyzedAt":"2026-08-20T16:12:39.808Z","contentChangedAt":"2026-08-20T16:12:39.808Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}