require_once get_template_directory() . '/inc/template-tags.php';
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<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/mamatot1/medref.org/wp-content/themes/astra/functions.php:624) in <b>/home/mamatot1/medref.org/wp-includes/pluggable.php</b> on line <b>1453</b><br />