View App Exception Log - QL-Win/QuickLook GitHub Wiki
Where to Find the Exception Log
To locate the exception log, navigate to the QuickLook data directory, typically found at:
C:\Users\{YOUR_USER_NAME}\AppData\Roaming\pooi.moe\QuickLook
.
If you are using QuickLook version 4.0 or later, you can conveniently open this folder by right-clicking the tray icon and selecting "Open Data Folder" from the context menu.