Как правильно разделить строку данных - ValueError: слишком много значений для распаковки

// We can get the selected value from the select itsself, not the options.
const selected_class = $("#classSelection").val();
// A function we want to use differently depending on what was selected.
const create_class = function( attr_str, attr_con, attr_int ) {
  // create a new character with these stats.
  return 'creating new class with stats: ' + attr_str + '|' + attr_con + '|' + attr_int;
};
// Might as well use an object to store the function calls instead of a list of if/else statements. It's easier to add extra options this way.
const class_functions = {
  all: function() {
    // create one of each class
  },
  duelist: function() {
    return create_class( 18, 14, 8 );
  },
  marauder: function() {
    return create_class( 20, 16, 4 );
  },
  ranger: function() {
    return create_class( 14, 14, 12 );
  },
  scion: function() {
    return create_class( 12, 20, 10 );
  },
  shadow: function() {
    return create_class( 12, 12, 16 );
  },
  templar: function() {
    return create_class( 16, 12, 14 );
  },
  witch: function() {
    return create_class( 8, 8, 20 );
  }
};
// Create the selected class. Scion is selected in the dropdown.
const character = class_functions[ selected_class ]();
console.log( character );

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="classSelection">
  <option value="all">All</option>
  <option value="scion" selected>Scion</option>
  <option value="marauder">Marauder</option>
  <option value="ranger">Ranger</option>
  <option value="witch">Witch</option>
  <option value="duelist">Duelist</option>
  <option value="templar">Templar</option>
  <option value="shadow">Shadow</option>
</select>