openai/codex · error · anyhow::Error

animation {name} fallback {} does not exist

Error message

animation {name} fallback {} does not exist

What it means

Error "animation {name} fallback {} does not exist" thrown in openai/codex.

Source

Thrown at codex-rs/tui/src/pets/model.rs:471

fn validate_animation_indices(
    animations: &HashMap<String, Animation>,
    frame_count: usize,
) -> Result<()> {
    for (name, animation) in animations {
        if animation.frames.is_empty() {
            bail!("animation {name} must include at least one frame");
        }
        for frame in &animation.frames {
            if frame.sprite_index >= frame_count {
                bail!(
                    "animation {name} references sprite index {}, but pet has {frame_count} frames",
                    frame.sprite_index
                );
            }
        }
        if !animations.contains_key(&animation.fallback) {
            bail!(
                "animation {name} fallback {} does not exist",
                animation.fallback
            );
        }
    }
    Ok(())
}

fn default_frame_count() -> usize {
    (catalog::DEFAULT_FRAME_COLUMNS * catalog::DEFAULT_FRAME_ROWS) as usize
}

fn default_animations() -> HashMap<String, Animation> {
    [
        ("idle", idle_animation()),
        (
            "running-right",
            app_state_animation(

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/tui/src/pets/model.rs:471 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/d08931328ed8edcb. Report an issue: GitHub.