When I test my game and start presing left Ctrl to start shooting there is keyboard failure and it pause my game.
What have I switched on? Left Ctrl is pausing my game in preview mode.
What does your code look like? Presumably when left-control is pressed you do something to fire your gun. Maybe there is a fall-through in code into your pause handling.
Here is the screenshot. I do not know if those errors are responsible for pausing my game preview mode?
Well, the errors in your screenshot say that PhysX doesn’t like one of your models. It does not have an inertia tensor, meaning the model isn’t compatible with PhysX. You might need to remove the models one at a time until you work out which one is causing this problem, and then post it here and ask for help.