sidebar not showing up on page

threw this code into page.php

<!-- End   <?php echo basename(__FILE__); ?> -->

<?php get_sidebar() ?>

<!-- End2   <?php echo basename(__FILE__); ?> -->

in view source ‘End2’ was not there so it seems to be blowing up at the get_sidebar()

any ideas where I should look next.

the page is really basic at this point
https://aaintergroupnepa.org/wordpress/userlogon
Yes I am a wp newbie ??

ok I am doing further code digging and there does not seem to be a get_sidebar() in my theme functions (functions.php)
Could that be possible? My theme is based on Sandbox (????)

Any tips on how one remedies this situation would be GREATLY apprecieated

Is there a listing of what themes are compatible with which wigets?

More info:

/*
THEME NAME: mytheme
THEME URI: https://www.aaintergroupnepa.org/mytheme
DESCRIPTION: theme to integrate with site based on sandbox
VERSION: 1.6.1
AUTHOR: [email protected]
AUTHOR URI: https://aaintergroupnepa.org
TAGS: white, microformats, fixed-width, flexible-width, one-column, two-columns, three-columns, four-columns, left-sidebar, right-sidebar
*/

/* Two-column with sidebar on left from the /examples/ folder */
@import url(‘examples/2c-l.css’);

Is there a listing of what themes are compatible with which wigets?

No but Sandbox should be compatible with all current template tags and default widgets.

threw this code into page.php

<!-- End   <?php echo basename(__FILE__); ?> -->

<?php get_sidebar() ?>

<!-- End2   <?php echo basename(__FILE__); ?> -->

in view source ‘End2’ was not there so it seems to be blowing up at the

<?php get_sidebar() ?>

Where does get_sidebar() live in WP?

the page is really basic at this point
https://aaintergroupnepa.org/wordpress/userlogon
Yes I am a wp newbie ??

in view source ‘End2’ was not there so it seems to be blowing up

That’s probably because your PHP code is inside an HTML comment.