Problem

Sentry Issue: ELECTRON-C6 (3 occurrences, last seen 2026-03-25)

TypeError: Cannot read properties of null (reading 'addInstance') thrown from handleOpenInSystem in PreviewPanel.tsx:384.

Root Cause

Arco Design's Message.useMessage() hook stores a ref to the context holder component. When handleOpenInSystem calls await ipcBridge.shell.openFile.invoke() and the IPC call rejects, the preview panel may have already unmounted, making contextHolderRef.current null. The subsequent messageApi.error() call then crashes with the TypeError.

Stack Trace

PreviewPanel.tsx:384 (handleOpenInSystem) → messageApi.error()
useMessage.js:66 → addNotice()
useMessage.js:53 → contextHolderRef.current.addInstance(notice) // null!

Fix

Wrap messageApi calls in handleOpenInSystem with try-catch to gracefully handle the unmounted context holder case.

Affected Versions

• v1.9.0 (confirmed)