tonhowtf/omniget · critical

app icon not found

Error message

app icon not found

What it means

In tray.rs setup(), the tray icon is obtained from app.default_window_icon().cloned(), which returns Option; the code .expect("app icon not found") panics when no default window icon is configured or bundled. The icon is then cached into BASE_ICON for later tray redraws.

Solutions

1. Add valid icons to tauri.conf.json (bundle.icon array) and rebuild so generate_context! embeds a default window icon.
2. Restore the default icons shipped with tauri (npx tauri icon path/to/source.png regenerates src-tauri/icons).
3. Replace the .expect with a fallback: if default_window_icon() is None, load the icon from bytes included via include_bytes!.
4. Guard setup so tray creation is skipped (with a warning) when no icon is available, instead of panicking.

Example fix

// before
let icon = app
    .default_window_icon()
    .cloned()
    .expect("app icon not found");

// after
let icon = app.default_window_icon().cloned().unwrap_or_else(|| {
    let bytes = include_bytes!("../icons/icon.png");
    tauri::image::Image::from_bytes(bytes).expect("bundled fallback icon").clone()
});

// check at startup
if app.default_window_icon().is_none() {
    tracing::warn!("no default window icon; tray will use fallback");
}

let icon = match app.default_window_icon().cloned() {
    Some(icon) => icon,
    None => tauri::image::Image::from_bytes(include_bytes!("../icons/icon.png")).expect("fallback icon").clone(),
};

When it happens

Trigger: Tauri app.setup runs while the bundle/window icon is absent: no "icon" entry in tauri.conf.json bundle config, icons not embedded because bundle.active is false or generate_context! was built without icon assets, or running a debug/dev build where icons weren't bundled.

Common situations: Fresh project missing src-tauri/icons after cleaning the folder; tauri.conf.json icons array emptied; building with a context that excludes icons; running tests without the bundled resources.

Understand the failure class

Background: 'Could not be found', 'does not exist', 'not found in database': the resource-not-found family when an ID, slug, key, or URI lookup comes back empty — this error's family across 20 libraries.

Related errors

• app_data_dir unavailable
• close failed
• create notebook failed
• e.code().to_string()
• e.to_string()

AI-assisted analysis of tonhowtf/omniget@8600b91f42 (2026-09-12). Data as JSON: /api/errors/54bb3c26f4df9534. Report an issue: GitHub.

Appendix: source

Thrown at src-tauri/src/tray.rs:87

    // Empty, hidden until the frontend pushes localized channel labels via
    // sync_channels_tray (the tray menu is native — $t is not reachable here).
    let channels_submenu = SubmenuBuilder::new(app, "Channels").build()?;
    channels_submenu.set_enabled(false).ok();
    CHANNELS_SUBMENU.set(channels_submenu.clone()).ok();

    let menu = MenuBuilder::new(app)
        .item(&open_item)
        .separator()
        .item(&downloads_item)
        .item(&channels_submenu)
        .separator()
        .item(&quit_item)
        .build()?;

    let icon = app
        .default_window_icon()
        .cloned()
        .expect("app icon not found");

    BASE_ICON
        .set((icon.rgba().to_vec(), icon.width(), icon.height()))
        .ok();

    TrayIconBuilder::with_id("main-tray")
        .icon(icon)
        .tooltip("OmniGet")
        .menu(&menu)
        .on_menu_event(|app, event| match event.id().as_ref() {
            "open" => show_window(app),
            "quit" => {
                request_quit(app);
            }
            other => {
                if let Some(channel_id) = other.strip_prefix("chk:") {
                    let app = app.clone();
                    let channel_id = channel_id.to_string();

View on GitHub (pinned to 8600b91f42)