generative remove is not working again. current version of LRC installed.

​@CaroleSD We need more informations.

Does this happen on all images or only this one?

What has been change on your system before the error occur?

Please provide a copy of your 'System Info'. This can be get from the Lightroom menu item Help > System Info. There's a copy button in the System Info dialog. Press this button and paste the info into your next forum post.

You can try to reset the preferences:  How to reset Lightroom Classic preferences (adobe.com)

It's recommended to backup your preferences before you reset the preferences to the default settings: https://helpx.adobe.com/lightroom-classic/kb/preference-file-and-other-file-locations.html