bevyengine/bevy · error · ProcessError

Encountered an error while saving the asset: {0}

Error message

Encountered an error while saving the asset: {0}

What it means

ProcessError::AssetSaveError: raised when saving the processed asset to disk fails inside the transform-and-save pipeline, wrapping the saver's error (serialization or IO failure) so the processed output could not be written.

Source

Thrown at crates/bevy_asset/src/processor/process.rs:172

    #[error(transparent)]
    MissingProcessedAssetWriterError(#[from] MissingProcessedAssetWriterError),
    /// Encountered an [`AssetReaderError`] when reading the asset metadata for this path.
    #[error("Failed to read asset metadata for {path}: {err}")]
    #[from(ignore)]
    ReadAssetMetaError {
        path: AssetPath<'static>,
        err: AssetReaderError,
    },
    #[error(transparent)]
    DeserializeMetaError(#[from] DeserializeMetaError),
    #[error(transparent)]
    AssetLoadError(#[from] AssetLoadError),
    /// The wrong meta type was passed into a processor.
    /// This is probably an internal implementation error.
    #[error("The wrong meta type was passed into a processor. This is probably an internal implementation error.")]
    WrongMetaType,
    /// Encountered an error while saving the asset.
    #[error("Encountered an error while saving the asset: {0}")]
    #[from(ignore)]
    AssetSaveError(BevyError),
    /// Encountered an error while transforming the asset.
    #[error("Encountered an error while transforming the asset: {0}")]
    #[from(ignore)]
    AssetTransformError(Box<dyn core::error::Error + Send + Sync + 'static>),
    /// Assets without extensions are not supported.
    #[error("Assets without extensions are not supported.")]
    ExtensionRequired,
}

impl<Loader, Transformer, Saver> Process for LoadTransformAndSave<Loader, Transformer, Saver>
where
    Loader: AssetLoader,
    Transformer: AssetTransformer<AssetInput = Loader::Asset>,
    Saver: AssetSaver<Asset = Transformer::AssetOutput>,
{
    type Settings =

View on GitHub (pinned to 396ca72708)

Solutions

1. Inspect the inner error to identify serialization vs IO failure
2. Verify the destination is writable and not locked by another process
3. Fix asset content that fails to serialize into the target format

When it happens

Trigger: Thrown at crates/bevy_asset/src/processor/process.rs:172 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/cf169df3fd8be1f4. Report an issue: GitHub.