You can recreate a new trash folder to fix the issue.
You can do the following action to recreate a new trash folder.
Open the Terminal app in the Utilities folder and paste the following at the prompt:
sudo rm -Rf ~/.Trash
Enter your admin password when prompted (you will not see it on the screen)
Press RETURN again
Apple Menu> Log Out <<USER>>
Log back in
Tags: ARC-8050T3, Mac, Mac Pro