Cant build my game help

i can run it and play it in unity but when i click build it give me a error41996-untitled.png

I think you are calling some object from PauseManager script, that should be somehow affected from that script. You should initialize that called object in awake function or you should make it public and from the editor drag and drop the prefab of the object (that you want to be affected) on that variable slot.