Line Renderer doesn't render the line

I use line Render for bullet trace.

At the Scene menu, Line is look good.

But when i start a game and shoot? Line Renderer doesn’t render the line.

I don’t know how to do

It was okay but as i change player model, going wrong.

Plese help me

and sorry bout my English

Are you using any sort of script to update the positions of the line renderer points while the game is running? If you are please share it so I can look at it.

How are you telling the line renderer where the bullet is and where the end of the line is?

Unity - Manual: Trail Renderer component would be better for bullet trace I think.