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I moved get_sidebar(); from header.php to footer.php but it simply does not appear is being placed after the last post instead of after the footer. There are no errors displayed. What do I need to do to get this working?

<?php
    global $path_root;
?>
                </main>
                <!-- END PAGE CONTENTS -->
                <!-- START FOOTERS -->
                <footer>
                    <div id="footframe">
                    </div>
<?php wp_footer(); //Crucial footer hook! ?>
                </footer>
                <!-- END FOOTERS -->
            </div>
            <!-- END MIDDLE PANE -->
            <!-- START SIDEBAR -->
            <div id="leftframe">
                <div id="sidebarframetop">
                    <div id="sidebar_widget">
<?php get_sidebar(); ?>
                    </div>
                </div>
            </div>
            <!-- END SIDEBAR -->
        </div>
    </body>
</html>

<aside id="secondary" class="widget-area">
    <section id="meta-2" class="widget widget_meta"><h2 class="widget-title">Meta</h2>
        <ul>
            <li><a href="https://isometricland.net/blog/wp-login.php?action=register">Register</a></li>         <li><a href="https://isometricland.net/blog/wp-login.php">Log in</a></li>
            <li><a href="https://isometricland.net/blog/feed/">Entries feed</a></li>
            <li><a href="https://isometricland.net/blog/comments/feed/">Comments feed</a></li>

            <li><a href="https://wordpress.org/">WordPress.org</a></li>
        </ul>

        </section><section id="archives-2" class="widget widget_archive"><h2 class="widget-title">Archives</h2>     <label class="screen-reader-text" for="archives-dropdown-2">Archives</label>
        <select id="archives-dropdown-2" name="archive-dropdown">
            
            <option value="">Select Month</option>
                <option value='https://isometricland.net/blog/2021/04/'> April 2021 </option>
    <option value='https://isometricland.net/blog/2021/03/'> March 2021 </option>
    <option value='https://isometricland.net/blog/2021/01/'> January 2021 </option>
    <option value='https://isometricland.net/blog/2020/12/'> December 2020 </option>
    <option value='https://isometricland.net/blog/2020/01/'> January 2020 </option>
    <option value='https://isometricland.net/blog/2019/11/'> November 2019 </option>
    <option value='https://isometricland.net/blog/2019/10/'> October 2019 </option>
    <option value='https://isometricland.net/blog/2019/04/'> April 2019 </option>
    <option value='https://isometricland.net/blog/2018/10/'> October 2018 </option>
    <option value='https://isometricland.net/blog/2018/09/'> September 2018 </option>
    <option value='https://isometricland.net/blog/2018/08/'> August 2018 </option>
    <option value='https://isometricland.net/blog/2018/06/'> June 2018 </option>
    <option value='https://isometricland.net/blog/2018/05/'> May 2018 </option>
    <option value='https://isometricland.net/blog/2018/04/'> April 2018 </option>
    <option value='https://isometricland.net/blog/2017/08/'> August 2017 </option>
    <option value='https://isometricland.net/blog/2017/05/'> May 2017 </option>
    <option value='https://isometricland.net/blog/2017/04/'> April 2017 </option>
    <option value='https://isometricland.net/blog/2017/01/'> January 2017 </option>
    <option value='https://isometricland.net/blog/2016/09/'> September 2016 </option>
    <option value='https://isometricland.net/blog/2016/08/'> August 2016 </option>
    <option value='https://isometricland.net/blog/2016/07/'> July 2016 </option>
    <option value='https://isometricland.net/blog/2016/03/'> March 2016 </option>
    <option value='https://isometricland.net/blog/2016/01/'> January 2016 </option>
    <option value='https://isometricland.net/blog/2015/05/'> May 2015 </option>
    <option value='https://isometricland.net/blog/2015/02/'> February 2015 </option>
    <option value='https://isometricland.net/blog/2015/01/'> January 2015 </option>

        </select>

<script type="text/javascript">
/* <![CDATA[ */
(function() {
    var dropdown = document.getElementById( "archives-dropdown-2" );
    function onSelectChange() {
        if ( dropdown.options[ dropdown.selectedIndex ].value !== '' ) {
            document.location.href = this.options[ this.selectedIndex ].value;
        }
    }
    dropdown.onchange = onSelectChange;
})();
/* ]]> */
</script>
            </section><section id="categories-2" class="widget widget_categories"><h2 class="widget-title">Categories</h2><form action="https://isometricland.net/blog" method="get"><label class="screen-reader-text" for="cat">Categories</label><select  name='cat' id='cat' class='postform' >
    <option value='-1'>Select Category</option>
    <option class="level-0" value="4">Artwork</option>
    <option class="level-0" value="2">Blog</option>
    <option class="level-0" value="10">Datsville</option>
    <option class="level-0" value="5">GearHead</option>
    <option class="level-0" value="12">Geogebra</option>
    <option class="level-0" value="8">Homeworld</option>
    <option class="level-0" value="3">Keyboard</option>
    <option class="level-0" value="7">Lego</option>
    <option class="level-0" value="6">POV-Ray</option>
    <option class="level-0" value="15">Random</option>
    <option class="level-0" value="11">Wikipedia</option>
</select>
</form>
<script type="text/javascript">
/* <![CDATA[ */
(function() {
    var dropdown = document.getElementById( "cat" );
    function onCatChange() {
        if ( dropdown.options[ dropdown.selectedIndex ].value > 0 ) {
            dropdown.parentNode.submit();
        }
    }
    dropdown.onchange = onCatChange;
})();
/* ]]> */
</script>

            </section><section id="search-2" class="widget widget_search"><h2 class="widget-title">Search</h2><form role="search" method="get" class="search-form" action="https://isometricland.net/blog/">
                <label>
                    <span class="screen-reader-text">Search for:</span>
                    <input type="search" class="search-field" placeholder="Search &hellip;" value="" name="s" />
                </label>
                <input type="submit" class="search-submit" value="Search" />
            </form></section></aside><!-- #secondary -->

I moved get_sidebar(); from header.php to footer.php but it simply does not appear is being placed after the last post in the page body instead of after the footer. There are no errors displayed. What do I need to do to get this working?

<?php
    global $path_root, $page_title, $path_img, $path_ssi, $path_css, $path_jav;
    include_once($path_ssi . 'plugin-paypal.php');
    include_once($path_ssi . 'plugin-sitesearch.php');
    include_once($path_ssi . 'plugin-socialicons.php');
    include_once($path_ssi . 'plugin-norml.php');
?>
                </main>
                <!-- END PAGE CONTENTS -->
                <!-- START FOOTERS -->
                <footer>
                    <div id="footframe">
                        <small class="blk"><?php printf( __( 'Proudly powered by %s.', 'isometricland' ), 'WordPress' ); ?> <?php printf( __( 'Theme: %1$s by Michael Horvath based on %2$s GPLv2 or later.', 'isometricland' ), 'isometricland', '<a href="http://underscores.me/" rel="designer">Underscores.me</a>' ); ?></small>
                        <small class="blk">This page &copy; Copyright 2009 Michael Horvath. Last modified: <?php echo date("F d Y H:i:s", getlastmod()) ?>.</small>
                    </div>
<?php wp_footer(); //Crucial footer hook! ?>
                </footer>
                <!-- END FOOTERS -->
            </div>
            <!-- END MIDDLE PANE -->
            <!-- START SIDEBAR -->
            <div id="leftframe">
                <div id="sidebarframetop">
                    <div id="sidebar_widget">
<?php get_sidebar('sidebar-1'); ?>
                    </div>
                </div>
                <div id="sidebarframebot">
                    <div id="file_paypal">
<?php //echo writePaypalDonate(); ?>
                    </div>
                    <div id="file_search">
<?php //echo writeSiteSearchForm(); ?>
                    </div>
                    <div id="file_social">
<?php echo writeSocialIcons(); ?>
                    </div>
                    <div id="file_norml">
<?php //echo writeNormlLogo(); ?>
                    </div>
                </div>
            </div>
            <!-- END SIDEBAR -->
        </div>
    </body>
</html>

                </main>
                <!-- END PAGE CONTENTS -->
                <!-- START FOOTERS -->
                <footer>
                    <div id="footframe">
                        <small class="blk">Proudly powered by WordPress. Theme: isometricland by Michael Horvath based on <a href="http://underscores.me/" rel="designer">Underscores.me</a> GPLv2 or later.</small>
                        <small class="blk">This page &copy; Copyright 2009 Michael Horvath. Last modified: February 06 2020 17:03:12.</small>
                    </div>
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            <!-- START SIDEBAR -->
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<br/>
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    </body>
</html>

I moved get_sidebar(); from header.php to footer.php but it simply does not appear is being placed after the last post instead of in the footer. There are no errors displayed. What do I need to do to get this working?

<aside id="secondary" class="widget-area">
    <section id="meta-2" class="widget widget_meta"><h2 class="widget-title">Meta</h2>
        <ul>
            <li><a href="blog/wp-login.php?action=register">Register</a></li>           <li><a href="https://isometricland.net/blog/wp-login.php">Log in</a></li>
            <li><a href="blog/feed/">Entries feed</a></li>
            <li><a href="blog/comments/feed/">Comments feed</a></li>

            <li><a href="https://wordpress.org/">WordPress.org</a></li>
        </ul>
    </section>
</aside>

I moved get_sidebar(); from header.php to footer.php but it simply does not appear is being placed after the last post instead of after the footer. There are no errors displayed. What do I need to do to get this working?

<aside id="secondary" class="widget-area">
    <section id="meta-2" class="widget widget_meta"><h2 class="widget-title">Meta</h2>
        <ul>
            <li><a href="https://isometricland.net/blog/wp-login.php?action=register">Register</a></li>         <li><a href="https://isometricland.net/blog/wp-login.php">Log in</a></li>
            <li><a href="https://isometricland.net/blog/feed/">Entries feed</a></li>
            <li><a href="https://isometricland.net/blog/comments/feed/">Comments feed</a></li>

            <li><a href="https://wordpress.org/">WordPress.org</a></li>
        </ul> 

        </section><section id="archives-2" class="widget widget_archive"><h2 class="widget-title">Archives</h2>     <label class="screen-reader-text" for="archives-dropdown-2">Archives</label>
        <select id="archives-dropdown-2" name="archive-dropdown">
            
            <option value="">Select Month</option>
                <option value='https://isometricland.net/blog/2021/04/'> April 2021 </option>
    <option value='https://isometricland.net/blog/2021/03/'> March 2021 </option>
    <option value='https://isometricland.net/blog/2021/01/'> January 2021 </option>
    <option value='https://isometricland.net/blog/2020/12/'> December 2020 </option>
    <option value='https://isometricland.net/blog/2020/01/'> January 2020 </option>
    <option value='https://isometricland.net/blog/2019/11/'> November 2019 </option>
    <option value='https://isometricland.net/blog/2019/10/'> October 2019 </option>
    <option value='https://isometricland.net/blog/2019/04/'> April 2019 </option>
    <option value='https://isometricland.net/blog/2018/10/'> October 2018 </option>
    <option value='https://isometricland.net/blog/2018/09/'> September 2018 </option>
    <option value='https://isometricland.net/blog/2018/08/'> August 2018 </option>
    <option value='https://isometricland.net/blog/2018/06/'> June 2018 </option>
    <option value='https://isometricland.net/blog/2018/05/'> May 2018 </option>
    <option value='https://isometricland.net/blog/2018/04/'> April 2018 </option>
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    <option value='https://isometricland.net/blog/2017/05/'> May 2017 </option>
    <option value='https://isometricland.net/blog/2017/04/'> April 2017 </option>
    <option value='https://isometricland.net/blog/2017/01/'> January 2017 </option>
    <option value='https://isometricland.net/blog/2016/09/'> September 2016 </option>
    <option value='https://isometricland.net/blog/2016/08/'> August 2016 </option>
    <option value='https://isometricland.net/blog/2016/07/'> July 2016 </option>
    <option value='https://isometricland.net/blog/2016/03/'> March 2016 </option>
    <option value='https://isometricland.net/blog/2016/01/'> January 2016 </option>
    <option value='https://isometricland.net/blog/2015/05/'> May 2015 </option>
    <option value='https://isometricland.net/blog/2015/02/'> February 2015 </option>
    <option value='https://isometricland.net/blog/2015/01/'> January 2015 </option>

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functions.php

/**
 * Register widget area.
 *
 * @link https://developer.wordpress.org/themes/functionality/sidebars/#registering-a-sidebar
 */
function isometricland_widgets_init() {
    register_sidebar( array(
        'name'          => esc_html__( 'Sidebar', 'isometricland' ),
        'id'            => 'sidebar-1',
        'description'   => esc_html__( 'Add widgets here.', 'isometricland' ),
        'before_widget' => '<section id="%1$s" class="widget %2$s">',
        'after_widget'  => '</section>',
        'before_title'  => '<h2 class="widget-title">',
        'after_title'   => '</h2>',
    ) );
}
add_action( 'widgets_init', 'isometricland_widgets_init' );

footer.php