The Linux File Manager Nemo is known to sometimes exhibit a bug where multiple copies of Nemo running can cause Cut+Paste operations to fail. The nemoHerd program can be used to identify if this bug is likely occurring. And nemoHerd allows you to kill all the running copies of Nemo hopefully eradicating the situation where the bug arises.
Download
Download links for nemoHerd.
Install
Launch a terminal and execute the following commands.
chmod +x nemoherd-*-x86_64.AppImage
Run the AppImage
pushd ~/Applications
./nemoherd-*-x86_64.AppImage
Extra
AppImageLauncher to integrate with your GUI.