bevyengine/bevy · error · ReadAssetBytesError

Encountered an io error while loading asset at `{}`: {source

Error message

Encountered an io error while loading asset at `{}`: {source}

What it means

ReadAssetBytesError::Io: an I/O error occurred while LoadContext::read_asset_bytes was reading the asset (or its dependency) bytes from the source. The wrapped source error identifies the low-level failure at the given asset path.

Source

Thrown at crates/bevy_asset/src/loader.rs:712

        self.load_builder().load(path)
    }
}

/// An error produced when calling [`LoadContext::read_asset_bytes`]
#[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. Inspect the `source` io error for the concrete cause
  2. Verify the asset file is readable and not locked/removed mid-load
  3. Retry the load: transient read failures can succeed on a later attempt
Defensive patterns

Strategy: retry

When it happens

Trigger: Thrown at crates/bevy_asset/src/loader.rs:712 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/5fcd41f99447a3a0. Report an issue: GitHub.