I have a file on Libre office icon, i can't open

When i double click on this file in Libre office list, it says it doesn’t exist .
Is there a way of restoring it so that i can open and work on it?
I can ‘open’ to see the contents but can’t amend anything.
Thank you

Would you mind to tell in what way you expect me to understand “a file on Libre office icon”.
If you are talking of a thumbnail link in the LibO starting desktop:
-1- Single click expected.
-2- If you get the “file doesn’t exist” report, most likely the file was deleted or renamed or moved elsewhere using system tools (file manager e.g.) or other software.
-3- You may be not aware of the fact that the file-open and file-save dialogues are functionally full-grown file managers of your system (default). If you act on a file there (delete, rename, move) this is excuted without the LibO desktop getting a notification.

Use your system’s tools to search for the wanted file(s).