bevyengine/bevy · error · MissingAssetLoaderForTypeIdError

no `AssetLoader` found with the ID '{type_id:?}'

Error message

no `AssetLoader` found with the ID '{type_id:?}'

What it means

MissingAssetLoaderForTypeIdError — no registered AssetLoader matches the requested core::any::TypeId (payload type_id). This occurs when looking up loaders by type ID for a type with no registered loader; register the loader first.

Source

Thrown at crates/bevy_asset/src/server/mod.rs:2333

/// An error that occurs when an [`AssetLoader`] is not registered for a given extension.
#[derive(Error, Debug, Clone, PartialEq, Eq)]
#[error("no `AssetLoader` found{}", format_missing_asset_ext(extensions))]
pub struct MissingAssetLoaderForExtensionError {
    extensions: Vec<String>,
}

/// An error that occurs when an [`AssetLoader`] is not registered for a given [`core::any::type_name`].
#[derive(Error, Debug, Clone, PartialEq, Eq)]
#[error("no `AssetLoader` found with the name '{type_name}'")]
pub struct MissingAssetLoaderForTypeNameError {
    /// The type name that was not found.
    pub type_name: String,
}

/// An error that occurs when an [`AssetLoader`] is not registered for a given [`Asset`] [`TypeId`].
#[derive(Error, Debug, Clone, PartialEq, Eq)]
#[error("no `AssetLoader` found with the ID '{type_id:?}'")]
pub struct MissingAssetLoaderForTypeIdError {
    /// The type ID that was not found.
    pub type_id: TypeId,
}

fn format_missing_asset_ext(exts: &[String]) -> String {
    if !exts.is_empty() {
        format!(
            " for the following extension{}: {}",
            if exts.len() > 1 { "s" } else { "" },
            exts.join(", ")
        )
    } else {
        " for file with no extension".to_string()
    }
}

impl core::fmt::Debug for AssetServer {

View on GitHub (pinned to 227d3a6c66)

Solutions

1. Register the loader via init_asset_loader before requesting it by TypeId
2. Ensure the exact same loader type is registered that is being requested

When it happens

Trigger: Thrown at crates/bevy_asset/src/server/mod.rs:2318 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/7e1769627c3b670f. Report an issue: GitHub.