Cant open Uasset, even if its in the content browser

Hello,

i wanted to copy and include a uasset into my new Content Browser (version 4.18), but it doesnt show up in Unreal Editor.

If i try to open it up with the UnrealGame Default Execution i get the Error:

“Plugin ‘LeapMotion’ failed to load because module ‘LeapMotion’ could not be found. Please ensure the plugin is properly installed, otherwise consider disabling the plugin for this project”

So i installed LeapMotion Plugin in my Project, but it didnt work.