{"record":{"id":"c93e0689b79fdfa4","repo":"bevyengine/bevy","slug":"attempted-to-load-an-asset-with-an-empty-path-0-c93e06","errorCode":null,"errorMessage":"Attempted to load an asset with an empty path \"{0}\".","messagePattern":"Attempted to load an asset with an empty path \"(.+?)\"\\.","errorType":"error_code","errorClass":"AssetLoadError::EmptyPath","httpStatus":null,"severity":"error","filePath":"crates/bevy_asset/src/server/mod.rs","lineNumber":2228,"sourceCode":"pub struct RequestedHandleTypeMismatchError {\n    /// The path of the asset.\n    pub path: AssetPath<'static>,\n    /// The requested type id of handle.\n    pub requested: TypeId,\n    /// The actual loaded asset type name.\n    pub actual_asset_name: &'static str,\n    /// The loader name used to load the asset.\n    pub loader_name: &'static str,\n}\n\n/// An error that occurs during an [`Asset`] load.\n#[derive(Error, Debug, Clone)]\n#[expect(\n    missing_docs,\n    reason = \"Adding docs to the variants would not add information beyond the error message and the names\"\n)]\npub enum AssetLoadError {\n    #[error(\"Attempted to load an asset with an empty path \\\"{0}\\\".\")]\n    EmptyPath(AssetPath<'static>),\n    #[error(\"Asset path \\\"{0}\\\" is unapproved. See UnapprovedPathMode for details.\")]\n    UnapprovedPath(AssetPath<'static>),\n    #[error(transparent)]\n    RequestedHandleTypeMismatch(#[from] Box<RequestedHandleTypeMismatchError>),\n    #[error(\"Could not find an asset loader matching: Asset Type: {asset_type_id:?}; Path: {asset_path:?};\")]\n    MissingAssetLoader {\n        asset_type_id: Option<TypeId>,\n        asset_path: String,\n    },\n    #[error(transparent)]\n    MissingAssetLoaderForExtension(#[from] MissingAssetLoaderForExtensionError),\n    #[error(transparent)]\n    MissingAssetLoaderForTypeName(#[from] MissingAssetLoaderForTypeNameError),\n    #[error(transparent)]\n    MissingAssetLoaderForTypeIdError(#[from] MissingAssetLoaderForTypeIdError),\n    #[error(transparent)]\n    AssetReaderError(#[from] AssetReaderError),","sourceCodeStart":2210,"sourceCodeEnd":2246,"githubUrl":"https://github.com/bevyengine/bevy/blob/227d3a6c661b3bdf3020d3e8290b5a6ffd0226f7/crates/bevy_asset/src/server/mod.rs#L2210-L2246","documentation":"AssetLoadError::EmptyPath is thrown by bevy_asset's AssetServer when get_handle or load is called with an AssetPath whose path string is empty. The server validates paths before doing any I/O and rejects empty paths immediately because no asset could ever be resolved from them. The error carries the (empty) AssetPath for diagnostics.","triggerScenarios":"Calling AssetServer::load, get_handle, or load_folder with an empty string/AssetPath; constructing AssetPath::parse(\"\") and passing it to the server; a config file or field that supplies the asset path being an empty string.","commonSituations":"Config/scene files where a path field was left empty or an env-driven path variable resolved to \"\"; string concatenation where the prefix failed to load so the result is \"\"; deserializing assets lists from JSON/RON where a missing entry defaults to an empty string.","solutions":["Check the path value right before the load call and skip or fix empty strings","Fix the config/source that produced the empty path (missing field, unset env var, failed concat)","Use Option<String> for optional asset paths in your config types so absence is explicit instead of \"\"","Log the empty path at the source to find which config entry is blank"],"exampleFix":"// before\nlet path: String = config.icon_path.clone();\nlet handle: Handle<Image> = server.load(&path); // panics/errors when path == \"\"\n// after\nlet handle: Handle<Image> = if config.icon_path.is_empty() {\n    Handle::default() // or skip loading entirely\n} else {\n    server.load(&config.icon_path)\n};","handlingStrategy":"validation","validationCode":"fn validate_asset_path(path: &str) -> Result<&str, String> {\n    if path.is_empty() {\n        Err(\"asset path is empty\".to_string())\n    } else {\n        Ok(path)\n    }\n}","typeGuard":"fn has_asset_path(path: &Option<String>) -> bool {\n    path.as_deref().map(|p| !p.is_empty()).unwrap_or(false)\n}","tryCatchPattern":"match server.load_checked(&path) {\n    Ok(handle) => handle,\n    Err(AssetLoadError::EmptyPath(p)) => {\n        error!(\"empty asset path: {p:?}\");\n        Handle::default()\n    }\n    Err(e) => panic!(\"asset load failed: {e}\"),\n}","preventionTips":["Validate path fields at config deserialization time (deny empty strings)","Model optional assets as Option<AssetPath> rather than empty strings","Add a unit test that deserializes your config and asserts every path is non-empty","Fail fast with a clear log when a path source (env var, CLI arg) yields an empty string"],"tags":["bevy","assets","path-validation","empty-path"],"backgroundTag":"empty-asset-path","analyzedSha":"227d3a6c661b3bdf3020d3e8290b5a6ffd0226f7","analyzedAt":"2026-08-30T08:55:11.013Z","contentChangedAt":"2026-08-30T08:55:11.013Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}