It sounds like you may have a brake pedal interlock issue with your 2019 Chrysler Pacifica. The brake pedal interlock is a safety feature designed to prevent the vehicle from starting unless the brake pedal is depressed. If the brake pedal is not fully released, the vehicle may not start. This can be caused by a variety of issues, including a faulty brake light switch, a malfunctioning brake pedal interlock solenoid, or a problem with the vehicle's electrical system.