Particle System deselected automaticlly whenever i go into play mode

hey everyone i am try to making a simple game but my particle system attached to enemy dosen’t show whenever i go into playmode but i can see it in edit mode.
pls help me i stuck here from two week.
edit mode

but when i go in play mode

if anyone know how to fix this pls help me
i am using unity 2019.4.9f1

I have same problem

I guess you are Assigning the element from Hierarchy , if you are then make sure you assign it from the prefab folder after applying over rides to your prefab