Install libnemo-extension1 by entering the following commands in the terminal:
sudo apt update sudo apt install libnemo-extension1
Nemo component system facilities
Nemo is the official file manager for the Cinnamon desktop. It allows one to browse directories, preview files and launch applications associated with them. It is also responsible for handling the icons on the Cinnamon desktop. It works on local and remote filesystems. . This package contains the shared library needed by the nemo extensions.