DioxusLabs/dioxus · error

component slot

Error message

component slot

What it means

`unchecked_mounted_dynamic_component_scope` reads a dynamic slot and `expect`s it to hold a component scope. This panic fires when the slot is empty or holds a different node kind while an unchecked accessor is used — an internal invariant violation in mount slot bookkeeping.

Source

Thrown at packages/core/src/mount.rs:602

        })
    }

    pub(crate) fn mounted_dynamic_component_root_mount(
        &self,
        mount: MountId,
        dyn_node_idx: usize,
    ) -> Option<MountId> {
        let scope = self.mounted_dynamic_component_scope(mount, dyn_node_idx)?;
        self.runtime.try_get_state(scope)?.root_mount()
    }

    pub(crate) fn unchecked_mounted_dynamic_component_scope(
        &self,
        mount: MountId,
        dyn_node_idx: usize,
    ) -> ScopeId {
        self.mounted_dynamic_component_scope(mount, dyn_node_idx)
            .expect("component slot")
    }

    pub(crate) fn set_mounted_dynamic_component_scope(
        &self,
        mount: MountId,
        dyn_node_idx: usize,
        value: ScopeId,
    ) {
        self.with_mount_mut(mount, |mount| {
            mount
                .dynamic_slot_mut(dyn_node_idx)
                .set_component_scope(value);
        });
    }

    pub(crate) fn set_component_root_render_parent(
        &self,
        mount: MountId,

View on GitHub (pinned to 24f6a829df)

Solutions

1. This is an internal invariant about component slots. Report it with a minimal reproduction to the Dioxus issue tracker.

When it happens

Trigger: Thrown at packages/core/src/mount.rs:602 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/52ec08122a961881. Report an issue: GitHub.