Transition from gas to LPG

My car is 307 1.6 look package 2005 model. It shifts from gas to gas, but then it goes back to gas, it does not go to gas, it makes lpg sound, its light is blinking.
Thanks already

Probably the brain of the tube is gone, I had such an event recently

Which model of atiker is attached?

Temperature sensor on the brain may be defective

parts to check lpg gas breaker valves - temperature sensor - lpg brain (regulator) problem may occur in one or more of these parts.