Due to the closure of the flight transponder, the Indian passenger plane disappeared from the radar after entering the airspace of Lahore.
According to the details, Air India Express flight 1191 left Amritsar for Dubai at 4:45 am and entered Lahore airspace 15 minutes later and disappeared from the radar shortly after.
Later, the air controller of Lahore contacted the plane through the hotline that your flight transponder was off.
The captain remained on the hotline until the flight transponder resumed.
Note that the flight transponder indicates the location and altitude of any aircraft during the flight.