public function create(StoreReferral $request): JsonResource 	{ 		$user = auth()->user(); 		$customer = $user->user;  		$email = $request->email;  		if (User::where('email', $email)->exists() || Referral::where('email', $email)->exists()) { 			abort(403, 'Referral already sent'); 		}  		$full_name = $customer->getFullName();  		$referral = $customer->createReferral($email);  		Notification::route('mail', $email)->notify(new ReferralMail($full_name, $email));  		return new ReferralResource($referral); 	}