bevyengine/bevy · error

The target Handle<{}>'s TypeId does not match the TypeId of

Error message

The target Handle<{}>'s TypeId does not match the TypeId of this UntypedHandle

What it means

A debug_assert_eq! failure inside UntypedHandle::typed_debug_checked: the stored TypeId of the untyped handle does not equal TypeId::of::<A>(). The conversion to Handle<A> would produce a handle of the wrong asset type; this check only fires in debug builds — in release the mismatch is silently ignored.

Source

Thrown at crates/bevy_asset/src/handle.rs:556

    /// Converts to a typed Handle. This will check the type when compiled with debug asserts, but it
    ///  _will not check if the target Handle type matches in release builds_. Use this as an optimization
    /// when you want some degree of validation at dev-time, but you are also very certain that the type
    /// actually matches.
    #[inline]
    pub fn typed_debug_checked<A: Asset>(self) -> Handle<A> {
        debug_assert_eq!(
            self.type_id(),
            TypeId::of::<A>(),
            "The target Handle<A>'s TypeId does not match the TypeId of this UntypedHandle"
        );
        self.typed_unchecked()
    }

    /// Converts to a typed Handle. This will panic if the internal [`TypeId`] does not match the given asset type `A`
    #[inline]
    pub fn typed<A: Asset>(self) -> Handle<A> {
        let Ok(handle) = self.try_typed() else {
            panic!(
                "The target Handle<{}>'s TypeId does not match the TypeId of this UntypedHandle",
                core::any::type_name::<A>()
            )
        };

        handle
    }

    /// Converts to a typed Handle if the internal [`TypeId`] matches the given asset type `A`.
    #[inline]
    pub fn try_typed<A: Asset>(self) -> Result<Handle<A>, UntypedAssetConversionError> {
        Handle::try_from(self)
    }

    /// The "meta transform" for the strong handle. This will only be [`Some`] if the handle is strong and there is a meta transform
    /// associated with it.
    #[inline]
    pub fn meta_transform(&self) -> Option<&MetaTransform> {

View on GitHub (pinned to 396ca72708)

Solutions

1. Ensure the UntypedHandle actually stores an asset of type A before calling typed_debug_checked::<A>()
2. Prefer typed() / try_typed() which validate (or return an error) in all builds when certainty is needed
3. Trace where the untyped handle came from and keep asset types consistent at the boundary

When it happens

Trigger: Thrown at crates/bevy_asset/src/handle.rs:556 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/87dcee37e80ac83c. Report an issue: GitHub.