Error When Insert License Header to Multiple Files

[githubplf]

Runtime environment

• OS (version): Windows 10
• VS Code version: 1.81.1
• VS Code build number (if possible):
• other extensions installed:

Behaviors

Expected behavior

Copyright header is inserted at top of all files in the selected folder.

Actual behavior

Nothing happens. Runtime status shows repeated error "Cannot read properties of undefined (reading 'document')".

Steps to reproduce the issue

1. Select folder context menu in project.
2. Select menu item licenser: insert license header to contents.

When attempting to apply to a single file, the error is displayed in alert dialog. The license is only applied if the file is open and currently active/selected.