Website issue

Im receiving this issue :

FATAL ERROR:Array
(
[type] => 1
[message] => Call to undefined function ot_register_meta_box()
[file] => /www/ihlm/wp-content/themes/ihlm/includes/framework/meta-boxes.php
[line] => 1022
)

https://ww.wp.xz.cn/plugins/wp-filebase/