Navigate with mouse on my inventory

Hello Guys,
I can’t navigate on my inventory with Mouse and I can’t Interact with Button Icons. I can Only use Keyboard. I have a new Input System and UIModule.
Im using mouse for the direction of the player for the movements.

You may have forgotten to set up a mouse event handler for your inventory or buttons. You can check this by opening the inspector for your UI element and ensuring it has an Event Trigger or Pointer Click Handler component.