hello ! what vers of php you used if you use 7.2 problem in conf.php in the admin of plugin .
change this code :
case("type_edit"): $car_type = Params::getParam("car_type");
if(is_array($car_type)) {
foreach($car_type as $k => $v) {
foreach($v as $kj => $vj) {
ModelCars::newInstance()->updateVehicleType($k, $kj, $vj);
}
}
}
add this if(is_array($car_type)) {
foreach.....
}