Lang Edit bug

This error is occuring when clicked on "Lang Edit" button on Ctrl + F window.

Reproduce the error by opening the Ctrl + F window and clicking the “Lang Edit” button, then inspect the displayed error and trace the button’s event entry point. The issue provides no file, test, or error text, so identify the affected code and add a focused regression test if the project supports one; done means the button opens or performs its intended language-edit action without the reported error.

Written by the indexing model from the issue text.