Fix InvalidStateError

✅ Solution

InvalidStateError in Tauri often arises when attempting to interact with web APIs (like `documentPictureInPicture`) before the webview has fully loaded or the relevant DOM elements are available. Ensure your code that uses these APIs executes after the `DOMContentLoaded` event or within a `setTimeout` to allow the webview to fully initialize. Alternatively, use Tauri's `app.on('window-ready')` to ensure the window is ready before executing your call.