moeru-ai/airi · error · Error

The Extension management window is no longer available.

Error message

The Extension management window is no longer available.

What it means

Thrown during the directory-import flow when BrowserWindow.fromWebContents(event.sender) returns null, meaning the window that owned the sending webContents no longer exists. The flow needs the owner window for security-scoped bookmark tracking and ownership bookkeeping, so it aborts instead of continuing with a detached sender.

Solutions

Keep the Extension management window open until the folder-import request completes.
Guard the renderer side: disable the import action on window close and check window liveness before invoking.
Handle the rejection in the renderer gracefully (it cannot recover once the window is gone).

Example fix

// before
const plan = await window.ipc.invoke('extension:select-folder') // invoked just before window.close()
window.close()

// after
const plan = await window.ipc.invoke('extension:select-folder')
if (plan) window.close()

Defensive patterns

Strategy: try-catch

Validate before calling

if (ownerWindow?.isDestroyed()) throw new Error('window gone; abort import before invoking')

Type guard

function hasAliveWindow(win: Electron.BrowserWindow | null): win is Electron.BrowserWindow {
  return win !== null && !win.isDestroyed()
}

Try / catch

try {
  const plan = await window.ipc.invoke('extension:select-folder')
} catch (err) {
  if (String((err as Error).message).includes('no longer available')) {
    // window closed mid-request; surface a neutral message to the user
  }
}

Prevention

Prevent window close while a folder-picker request is in flight.
Check win.isDestroyed() before dependent operations.
Avoid invoking import handlers from webviews or detached frames.
Handle in-flight promises on window 'close' events.

When it happens

Trigger: The user closes the Extension management window between starting the directory-picker IPC call and the point where the main process resolves the owning BrowserWindow, or the sender is a frameless/webview context with no associated BrowserWindow.

Common situations: User closes the settings/extension window while a native folder dialog operation is in flight; window destroyed mid-request during app shutdown; sender webview detached from its host window.

Understand the failure class

Background: "Invalid state transition" errors: "status must be X, actually Y", "already rejected/charging/uninstalled", "cannot ... while running" — what they mean when a library rejects your call — this error's family across 31 libraries.

Related errors

AI-assisted analysis of moeru-ai/airi@438a067dde (2026-09-17). Data as JSON: /api/errors/8ec6367ab2d70481. Report an issue: GitHub.

Appendix: source

Thrown at apps/stage-tamagotchi/src/main/services/airi/plugins/index.ts:128

  const invokePluginProtocolListProviders = defineInvoke(context, pluginProtocolListProviders)
  // A plan remains owned by the renderer that displayed its review. Reopening
  // Settings creates a new renderer, which must start a new import review.
  const directoryImportPlanOwners = new Map<string, number>()
  const trackedDirectoryImportOwnerIds = new Set<number>()

  defineInvokeHandler(context, electronPluginList, async () => {
    return await hostService.list()
  })

  defineInvokeHandler(context, electronPluginPrepareDirectoryImport, async (_, invokeOptions) => {
    const event = requireExtensionManagementEvent(invokeOptions, options.getExtensionManagementWebContentsId)
    const dialogOptions: OpenDialogOptions = {
      properties: ['openDirectory'],
      securityScopedBookmarks: true,
    }
    const ownerWindow = BrowserWindow.fromWebContents(event.sender)
    if (!ownerWindow) {
      throw new Error('The Extension management window is no longer available.')
    }
    trackDirectoryImportOwner(
      hostService,
      directoryImportPlanOwners,
      trackedDirectoryImportOwnerIds,
      ownerWindow,
      event.sender.id,
    )
    const selection = await dialog.showOpenDialog(ownerWindow, dialogOptions)
    const sourcePath = selection.filePaths[0]
    if (selection.canceled || !sourcePath) {
      return { status: 'cancelled' as const }
    }

    const plan = await hostService.prepareDirectoryImport(sourcePath, selection.bookmarks?.[0])
    if (
      ownerWindow.isDestroyed()
      || options.getExtensionManagementWebContentsId?.() !== event.sender.id

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