IA ne fonctionne pas

1. Uncheck Detect Objects (on by default in LR 14) -- it doesn't work well, especially with skinny objects and along the edges of photos.

2. After clicking Remove, check that the Opacity slider is 100 -- LR infrequently changes it to something else.

3. See this article for how to remove objects more reliably:
https://www.lightroomqueen.com/generative-remove-replace/

Most complaints about Remove are addressed in the article. But if it doesn't help, please attach a full-resolution JPEG exported from the unmodified original photo (not a screenshot), so we and Adobe can see the issue in detail. With nearly every of the several dozen problem photos posted here, we've been able to show how to quickly remove the desired objects.

A lot more information is needed.

Please state what software and version NUMBER you are talking about.

Please state what operating system version NUMBER you are using.

Please explain in a lot more detail. Exactly what did you do? Exactly what happened? If there is an error message, please provide the complete unedited word-for-word error message, even if it is not in English.

Please show us screen captures of the original photo, and then the area you tried to delete, and the output from the attempted delete. Use the "Insert Photos" icon to include your screen captures in your reply; do NOT attach files.