Undefined index issues

I am new to theming in drupal and php as well, generally a front end developer with html/css. I installed my base theme using an edited stark framework, and recieved these notices when I applied the theme:

Notice: Undefined index: sidebar_first in include() (line 138 of /home3/missxjay/public_html/sites/all/themes/Monarch/page.tpl.php).
Notice: Undefined index: sidebar_second in include() (line 144 of /home3/missxjay/public_html/sites/all/themes/Monarch/page.tpl.php).

Here is the code that those notices are referring to:

 <?php if ($page['sidebar_first']): ?>
        <div id="sidebar-first" class="column sidebar"><div class="section">
          <?php print render($page['sidebar_first']); ?>
        </div></div> <!-- /.section, /#sidebar-first -->
      <?php endif; ?>

      <?php if ($page['sidebar_second']): ?>
        <div id="sidebar-second" class="column sidebar"><div class="section">
          <?php print render($page['sidebar_second']); ?>
        </div></div> <!-- /.section, /#sidebar-second -->
      <?php endif; ?>

I would appreciate any info at all for help, really hoping to figure this out. Thanks!