bevyengine/bevy · error · TryInsertBatchError

Could not insert bundles of type {bundle_type} into the enti

Error message

Could not insert bundles of type {bundle_type} into the entities with the following IDs because they do not exist: {entities:?}

What it means

TryInsertBatchError: World::try_insert_batch (or try_insert_batch_if_new) was given entities that no longer exist in the world, so their bundles could not be inserted.

Source

Thrown at crates/bevy_ecs/src/world/error.rs:25

    component::ComponentId,
    entity::{Entity, EntityNotSpawnedError},
    schedule::InternedScheduleLabel,
};

/// The error type returned by [`World::try_run_schedule`] if the provided schedule does not exist.
///
/// [`World::try_run_schedule`]: crate::world::World::try_run_schedule
#[derive(thiserror::Error, Debug)]
#[error("The schedule with the label {0:?} was not found.")]
pub struct TryRunScheduleError(pub InternedScheduleLabel);

/// The error type returned by [`World::try_insert_batch`] and [`World::try_insert_batch_if_new`]
/// if any of the provided entities do not exist.
///
/// [`World::try_insert_batch`]: crate::world::World::try_insert_batch
/// [`World::try_insert_batch_if_new`]: crate::world::World::try_insert_batch_if_new
#[derive(thiserror::Error, Debug, Clone)]
#[error("Could not insert bundles of type {bundle_type} into the entities with the following IDs because they do not exist: {entities:?}")]
pub struct TryInsertBatchError {
    /// The bundles' type name.
    pub bundle_type: DebugName,
    /// The IDs of the provided entities that do not exist.
    pub entities: Vec<Entity>,
}

/// An error that occurs when a specified [`Entity`] could not be despawned.
#[derive(thiserror::Error, Debug, Clone, Copy)]
#[error("Could not despawn entity: {0}")]
pub struct EntityDespawnError(#[from] pub EntityNotSpawnedError);

/// An error that occurs when dynamically retrieving components from an entity.
#[derive(thiserror::Error, Debug, Clone, Copy, PartialEq, Eq)]
pub enum EntityComponentError {
    /// The component with the given [`ComponentId`] does not exist on the entity.
    #[error("The component with ID {0:?} does not exist on the entity.")]
    MissingComponent(ComponentId),

View on GitHub (pinned to 396ca72708)

Solutions

1. Filter out stale ids with world.get_entity(id).is_some() before inserting
2. Handle the error and skip/recreate the listed entities
3. If some entities may legitimately be gone, accept partial failure and continue

When it happens

Trigger: Thrown at crates/bevy_ecs/src/world/error.rs:25 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of bevyengine/bevy@396ca72708 (2026-08-20). Data as JSON: /api/errors/3fb13038a2dbf0db. Report an issue: GitHub.