FPS gun doesn't shoot

After downloading a slightly changed from the default FPS game project off the internet (https://gamedevcentral.io/products/free-drivable-car-ue4-18/) , in which you can get in and out of a car, I found that the FPS gun does not shoot. Does anyone know how to fix this? I’m sure its pretty simple.

do you have a screenshot of the firstpersoncharacter blueprint? check and make sure all your exec nodes are connected properlyand that there arent any branches you need variables for. also i would check your inputs and make sure the input is set up properly. other than that, i cant help you without a picture.