anchor.diff:                  <div class="span-6">Memory: 22</div>
                 </div>
   
  -              <% @skills_tree.skills_in_group(group).each do |skill| %>
  +              <% @character.skills_tree.skills_in_group(group).each do |skill| %>
                   <div class="row">
                     <%= link_to(skill.name, universe_type_path(skill.type_id)) %>
                     <br>
  -                  <%= @skills_tree.skill(skill)&.trained_skill_level %>
  +                  <%= @character.skills_tree.skill(skill)&.trained_skill_level %>
                   </div>
                 <% end %>
               </div>
  
positive.code:                 Skill description
                </div>
                <div class="row">
                  Levels trained: <%= @skills_tree.levels_trained_in_group(group) %> / <%= @skills_tree.total_levels_in_group(group) %>
                </div>
                <div class="row">
                  Levels in training queue: x
                </div>
                <div class="row">
                  Skill points: <%= number_with_delimiter(@skills_tree.skill_points_in_group(group), delimiter: " ") %> / xxx xxx xxx
                </div>
                <div class="row">
                  Certificates claimed: xx / xx
  
negative.code:   </div>
  
    <div class="col-xs-12 col-sm-12 col-md-12 col-lg-4 col-xl-4">
      <h4 class="text-center text-break">Skills Tree</h4>
  
      <div class="accordion" id="skills_tree_accordion">
        <% @character.skills_tree.groups.each do |group| %>
          <div class="card">
            <div class="card-header" id="heading_group_<%= group.group_id %>">
              <h2 class="mb-0">
  