{"record":{"id":"bbfd6be734194acf","repo":"AlexsJones/llmfit","slug":"error-while-running-tauri-application","errorCode":null,"errorMessage":"error while running tauri application","messagePattern":"error while running tauri application","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"critical","filePath":"llmfit-desktop/src/main.rs","lineNumber":204,"sourceCode":"fn is_ollama_available(state: State<'_, AppState>) -> bool {\n    state.ollama.is_available()\n}\n\nfn main() {\n    tauri::Builder::default()\n        .manage(AppState {\n            ollama: OllamaProvider::new(),\n            pull_handle: Mutex::new(None),\n        })\n        .invoke_handler(tauri::generate_handler![\n            get_system_specs,\n            get_model_fits,\n            start_pull,\n            poll_pull,\n            is_ollama_available,\n        ])\n        .run(tauri::generate_context!())\n        .expect(\"error while running tauri application\");\n}\n","sourceCodeStart":186,"sourceCodeEnd":206,"githubUrl":"https://github.com/AlexsJones/llmfit/blob/8f16394d7478d03a12937d50eec41b39311052d8/llmfit-desktop/src/main.rs#L186-L206","documentation":"The terminal .expect() on tauri::Builder::...run(tauri::generate_context!()) in llmfit-desktop/src/main.rs. run() starts the Tauri event loop and returns Err on any launch failure — most commonly a webview/backend initialization problem — and the expect converts it into a process panic at startup with this generic message; the underlying tauri::Error is attached as the panic payload.","triggerScenarios":"Launching the desktop app when the platform webview is unavailable: Linux without WebKitGTK (libwebkit2gtk-4.1) installed, headless session with no DISPLAY/WAYLAND_DISPLAY, or a broken compositor; also Windows missing WebView2 runtime, or a generate_context asset/config error.","commonSituations":"Fresh Linux machine or minimal container without `libwebkit2gtk-4.1-dev` and friends; running the app over SSH without X forwarding; CI smoke tests of the desktop crate in headless runners; first launch after a system upgrade broke the webview libraries.","solutions":["On Linux install Tauri prerequisites: `sudo apt install libwebkit2gtk-4.1-dev build-essential libssl-dev libgtk-3-dev libayatana-appindicator3-dev librsvg2-dev`","Ensure a graphical session exists (export DISPLAY or WAYLAND_DISPLAY) or test with a virtual framebuffer (xvfb-run) in headless environments","On Windows install the WebView2 Evergreen runtime; on macOS verify the app is not sandboxed away from its assets","For a real diagnosis, replace .expect(...) with error logging of the tauri::Error (e.g. .run(ctx).unwrap_or_else(|e| { eprintln!(\"tauri run failed: {e}\"); std::process::exit(1); }))"],"exampleFix":"// before (llmfit-desktop/src/main.rs)\n.run(tauri::generate_context!())\n.expect(\"error while running tauri application\");\n\n// after — surface the underlying error instead of a bare panic\nif let Err(e) = tauri::Builder::default()\n    /* ...same builder chain... */\n    .run(tauri::generate_context!())\n{\n    eprintln!(\"error while running tauri application: {e}\");\n    std::process::exit(1);\n}","handlingStrategy":"try-catch","validationCode":"// Pre-flight before launching: fail with a clear message instead of a panic\nfn webview_available() -> bool {\n    #[cfg(target_os = \"linux\")]\n    { std::path::Path::new(\"/usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.1.so.0\").exists() }\n    #[cfg(not(target_os = \"linux\"))]\n    { true }\n}","typeGuard":null,"tryCatchPattern":"match tauri::Builder::default()\n    .manage(AppState { ollama: OllamaProvider::new(), pull_handle: Mutex::new(None) })\n    .invoke_handler(tauri::generate_handler![get_system_specs, get_model_fits, start_pull, poll_pull, is_ollama_available])\n    .run(tauri::generate_context!())\n{\n    Ok(()) => (),\n    Err(e) => {\n        eprintln!(\"error while running tauri application: {e}\");\n        std::process::exit(1);\n    }\n}","preventionTips":["Install WebKitGTK 4.1 dev packages on Linux dev machines and desktop CI images","Do not launch the GUI in headless sessions; gate on DISPLAY/WAYLAND_DISPLAY or use xvfb in tests","Distribute the WebView2 runtime installer with Windows builds"],"tags":["rust","tauri","desktop","webview","startup"],"backgroundTag":"tauri-event-loop-failed","analyzedSha":"8f16394d7478d03a12937d50eec41b39311052d8","analyzedAt":"2026-08-17T10:35:29.658Z","contentChangedAt":"2026-08-17T10:35:29.658Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}