bevyengine/bevy · error · ReadAssetBytesError

The LoadContext for this read_asset_bytes call requires hash

Error message

The LoadContext for this read_asset_bytes call requires hash metadata, but it was not provided. This is likely an internal implementation error.

What it means

ReadAssetBytesError variant raised when read_asset_bytes was called through a code path that requires the asset's hash metadata, but none was provided. As the message states this signals an internal implementation error in the asset pipeline, not user input.

Source

Thrown at crates/bevy_asset/src/loader.rs:717

#[derive(Error, Debug)]
pub enum ReadAssetBytesError {
    #[error("Attempted to load an asset with an empty path \"{0}\"")]
    EmptyPath(AssetPath<'static>),
    #[error(transparent)]
    DeserializeMetaError(#[from] DeserializeMetaError),
    #[error(transparent)]
    AssetReaderError(#[from] AssetReaderError),
    #[error(transparent)]
    MissingAssetSourceError(#[from] MissingAssetSourceError),
    #[error(transparent)]
    MissingProcessedAssetReaderError(#[from] MissingProcessedAssetReaderError),
    /// Encountered an I/O error while loading an asset.
    #[error("Encountered an io error while loading asset at `{}`: {source}", path.display())]
    Io {
        path: PathBuf,
        source: std::io::Error,
    },
    #[error("The LoadContext for this read_asset_bytes call requires hash metadata, but it was not provided. This is likely an internal implementation error.")]
    MissingAssetHash,
}

View on GitHub (pinned to 396ca72708)

Solutions

  1. Report it as a bevy internal bug with a reproduction
  2. Ensure you are on a recent bevy version where the pipeline passes meta hashes consistently
  3. Avoid invoking hash-requiring internal APIs directly from user code
Defensive patterns

Strategy: validation

When it happens

Trigger: Thrown at crates/bevy_asset/src/loader.rs:717 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/cebf1f7773db87ff. Report an issue: GitHub.