template->_tpl_load_file(): File /home/drghoreishirad/domains/dr-ghoreishirad.com/private_html/htmls/default/lang_changer_linear.html does not exist or is empty

in file: /home/drghoreishirad/domains/dr-ghoreishirad.com/public_html/includes/functions_template.php
on line: 31