DioxusLabs/dioxus · error · NativeAssetResolveError

Asset not found

Error message

Asset not found

What it means

Terminal failure of resolve_native_asset: the requested asset path could not be located — the Android java loader had no match and resolve_asset_path_from_filesystem found no file, so the native asset server responds with this NativeAssetResolveError (surfaced as a failed/404 asset fetch for bundled resources).

Source

Thrown at packages/asset-resolver/src/native.rs:95

        Ok(Response::builder()
            .header("Content-Type", self.mime_type)
            .header("Access-Control-Allow-Origin", "*")
            .body(self.body)?)
    }
}

/// Read the bytes for an asset
pub(crate) fn resolve_native_asset(path: &str) -> Result<Vec<u8>, NativeAssetResolveError> {
    // Attempt to serve from the asset dir on android using its loader
    #[cfg(target_os = "android")]
    {
        if let Some(asset) = to_java_load_asset(path) {
            return Ok(asset);
        }
    }

    let Some(uri_path) = resolve_asset_path_from_filesystem(path) else {
        return Err(NativeAssetResolveError::IoError(std::io::Error::new(
            std::io::ErrorKind::NotFound,
            "Asset not found",
        )));
    };
    Ok(std::fs::read(uri_path)?)
}

/// Resolve the asset and its mime type
fn resolve_asset(path: &str) -> Result<Option<ResolvedAsset>, NativeAssetResolveError> {
    // Attempt to serve from the asset dir on android using its loader
    #[cfg(target_os = "android")]
    {
        if let Some(asset) = to_java_load_asset(path) {
            let extension = path.rsplit_once('.').and_then(|(_, ext)| Some(ext));
            let mime_type = get_mime_from_ext(extension);
            return Ok(Some(ResolvedAsset::new(mime_type, asset)));
        }
    }

View on GitHub (pinned to 24f6a829df)

Solutions

1. The asset was not found. Check the asset path and ensure it was bundled via the asset!() macro with dx as the linker.

When it happens

Trigger: Thrown at packages/asset-resolver/src/native.rs:95 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of DioxusLabs/dioxus@24f6a829df (2026-08-23). Data as JSON: /api/errors/5d2c65e201911baf. Report an issue: GitHub.