Drag and drop prefabs into inspector



I want to be able to drag prefabs to the inspector on the right.

I want to assign Fab 1 to a prefab.

The drag and drop functionality is not working.

I am using v2020.1.6.Personal of Unity.

I am using Ubuntu 18.04.

Please help.


I solved this problem.

I deleted the prefab bullet.

Then I created the prefab bullet again.

Then the drag and drop started working.