bevyengine/bevy · error · WriteDefaultMetaError

failed to write default asset meta file: {0}

Error message

failed to write default asset meta file: {0}

What it means

WriteDefaultMetaError::FailedToWriteMeta — writing the default .meta file failed with the wrapped AssetWriterError (payload), covering I/O failures from the asset writer (disk errors, permission denied, HTTP write failure). Inspect the inner error for the cause.

Source

Thrown at crates/bevy_asset/src/server/mod.rs:2385

    #[error("tried to wait for an asset that is not being loaded")]
    NotLoaded,
    /// The asset failed to load.
    #[error(transparent)]
    Failed(Arc<AssetLoadError>),
    /// A dependency of the asset failed to load.
    #[error(transparent)]
    DependencyFailed(Arc<AssetLoadError>),
}

#[derive(Error, Debug)]
pub enum WriteDefaultMetaError {
    #[error(transparent)]
    MissingAssetLoader(#[from] MissingAssetLoaderForExtensionError),
    #[error(transparent)]
    MissingAssetSource(#[from] MissingAssetSourceError),
    #[error(transparent)]
    MissingAssetWriter(#[from] MissingAssetWriterError),
    #[error("failed to write default asset meta file: {0}")]
    FailedToWriteMeta(#[from] AssetWriterError),
    #[error("asset meta file already exists, so avoiding overwrite")]
    MetaAlreadyExists,
    #[error("encountered an I/O error while reading the existing meta file: {0}")]
    IoErrorFromExistingMetaCheck(Arc<std::io::Error>),
    #[error("encountered HTTP status {0} when reading the existing meta file")]
    HttpErrorFromExistingMetaCheck(u16),
}

View on GitHub (pinned to 227d3a6c66)

Solutions

1. Check filesystem permissions and disk space in the assets directory
2. Inspect the wrapped AssetWriterError for the specific I/O failure
3. Remove stale/corrupt .meta files and let Bevy regenerate them

When it happens

Trigger: Thrown at crates/bevy_asset/src/server/mod.rs:2370 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of bevyengine/bevy@227d3a6c66 (2026-08-20). Data as JSON: /api/errors/01c65eaa7fb07330. Report an issue: GitHub.