java.util.LinkedHashMap can not be cast to ******. class

I'm trying to get each of the objects that make up a List of objects so that when I iterate over them I'll add them to a database.

The procedure I follow is the following:

1. I call this method that converts a Json string to a list of objects.

    public List<Schedule> jsonStringToArray(String jsonString) throws IOException {
    return OBJECT_MAPPER.readValue(jsonString, /*new TypeReference<List<Schedule>>(){}*/ List.class);

    //return OBJECT_MAPPER.convertValue(schedules, new TypeReference<List<Schedule>>() {});
}

    for (int i = 0; i < schedules.getSchedulesList().size(); i++) {

    scheduleService.saveSchedule(schedules.getSchedulesList().get(i));
    System.out.println(schedules.getSchedulesList().get(i));
}

The fault gives me on the save line and tells me the following:

  

java.lang.ClassCastException: java.util.LinkedHashMap can not be cast to en.ticnor.trayecbus.model.Schedule

I think the error is in the jsonStringToArray method, when doing the return I'm not doing the mapper well in such a way that it becomes a Schedule object. What I think this is doing is in a kind of auxiliary object of type LinkedHashMap